Entity Hierarchy in SEO: How to Structure Primary, Secondary, and Supporting Entities

Entity hierarchy is the order of importance you assign to the concepts on a page.

At the top sits the primary entity. Under that come secondary entities. Around them sit supporting entities, attributes, and related concepts. Good hierarchy keeps the page centered, helps search engines read the page intent more cleanly, and gives writers a clear structure to follow.

On Semantec SEO, this page belongs inside the Entity SEO cluster and pairs closely with What Is an EntityEntity SalienceEntity Attributes, and Entity Map.

The short version

A page with clear entity hierarchy answers four questions fast:

  1. What is this page mainly about?
  2. Which supporting concepts help explain it?
  3. Which attributes belong close to it?
  4. Which related pages should this page connect to?

If those answers are blurry, the page starts to drift. If they are clear, the draft gets tighter, the headings get cleaner, and the internal links make more sense.

What entity hierarchy means

Entity hierarchy is not just a list of terms.

It is a structure. It tells you which entity owns the page, which entities support that page goal, and which concepts belong lower in the section flow.

Think of it like this:

  • Primary entity: the core topic the page is built to explain
  • Secondary entities: the main related concepts that help define, compare, or expand the core topic
  • Supporting entities: examples, attributes, tools, processes, formats, or adjacent concepts that strengthen the page without taking it over

A page on entity hierarchy, for example, has entity hierarchy as the primary entity. Nearby concepts like entity salienceentity attributesentity placement, and entity map sit lower in the structure and support the main topic.

Why hierarchy comes before drafting

Writers often start with paragraphs. Strong SEO pages start with structure.

If you set the hierarchy first, the page gets a cleaner center of gravity. That affects the title, heading order, intro block, examples, internal links, and schema choices. In the MIRENA workflow, entities are classified into primary, secondary, and supporting levels, then placed across headings, metadata, schema, and internal links based on that hierarchy.

This is also why a stronger Entity Led Brief is more useful than a loose keyword outline. The brief can tell the writer which entity leads the page, which concepts support it, and where each one belongs in the flow.

The three layers of entity hierarchy

1. Primary entity

The primary entity is the page owner.

It should show up in the title, H1, intro, and the main explanation block near the top of the page. If the page cannot name its primary entity cleanly, the page intent is weak from the start. MIRENA’s entity structuring rules place primary entities in high priority zones such as metadata, H1, and top of page content so the page has a clear semantic center.

On this page, the primary entity is entity hierarchy.

2. Secondary entities

Secondary entities help the page do real work.

They often appear in H2 sections, comparison blocks, examples, and decision frames. They are close enough to reinforce the primary entity, but not so dominant that they take over the page. In MIRENA’s content model, secondary entities are distributed through subheadings and mapped sections to keep topic flow clear and keep the page tied to search intent.

For this topic, strong secondary entities include:

3. Supporting entities

Supporting entities add depth without dragging the page off course.

They often show up in examples, tables, checklists, and FAQs. Their job is to strengthen comprehension, not compete with the primary entity.

Examples here include:

  • heading hierarchy
  • schema markup
  • anchor text
  • intro blocks
  • content briefs
  • topic clusters

Where each entity level belongs on the page

A clear hierarchy does not stop at planning. It should show up in placement.

Primary entity placement

Your primary entity belongs in:

  • title tag
  • H1
  • intro paragraph
  • top summary block
  • key internal anchors
  • core schema description zones

Secondary entity placement

Your secondary entities belong in:

  • H2 sections
  • comparison or explanation blocks
  • tables
  • FAQs
  • internal links to sibling pages

Supporting entity placement

Your supporting entities belong in:

  • examples
  • checklists
  • supporting bullets
  • proof blocks
  • related questions
  • contextual links

This page pattern matches the system logic behind MIRENA, where hierarchy is tied to headings, schema, internal links, and proximity between entities and their attributes. The same internal linking rules also push for semantically aligned anchors rather than generic links, so related entity pages reinforce each other in a cluster.

Entity hierarchy vs entity salience

These two concepts sit close together, but they are not identical.

Entity hierarchy is about order and role. Entity salience is about prominence and strength.

A page can name the right hierarchy and still underplay the top entity. It can also repeat one entity so often that the copy gets clumsy.

A cleaner way to think about it:

  • hierarchy decides the roles
  • salience decides the prominence
  • placement decides where those roles show up
  • proximity decides how tightly related concepts stay grouped

That is why Entity Salience and Entity Attributes are not side notes here. They are the next pieces of the same puzzle.

Entity hierarchy vs a keyword list

A keyword list tells you what phrases people search.

Entity hierarchy tells you how the page should be built.

That difference changes the output:

  • a keyword list can produce a loose draft
  • entity hierarchy can produce a structured page
  • a keyword list can inflate coverage
  • entity hierarchy can sharpen relevance
  • a keyword list can overload headings
  • entity hierarchy can keep one page centered on one clear topic

This is one reason MIRENA is framed as a workflow around entities, intent, information gain, SERP formatting, internal linking, and schema before the draft is finalized.

How to build entity hierarchy for a page

Here is a practical workflow you can use on any page.

1. Name the page owner

Pick the one entity the page is built to serve.

If you cannot pick one, you may have two pages hiding inside one draft.

2. List the closest supporting concepts

Pull the concepts that help define, compare, or expand the page owner.

For this page, that list includes salience, attributes, placement, internal linking, and structure.

3. Push lower value concepts down the page

Do not let examples, edge cases, or tool references crowd the opening. Keep the core concept in front.

4. Group attributes with the right entity

Do not scatter attributes far away from the thing they describe. MIRENA’s entity placement logic pushes for close proximity between entities and their defining attributes so search systems can read those relationships more clearly.

5. Export the hierarchy into the brief

Once the roles are set, send them into the brief. That is where Entity Led Brief and Intent Led Brief start to pull their weight.

6. Link the page into the cluster

A page with clean hierarchy should also connect to the right sibling pages. MIRENA’s linking rules treat entity relationships as part of the structure, not an afterthought, and recommend anchor diversity tied to intent and section context.

A simple example

Say you are building a page on entity hierarchy.

A weak version might look like this:

  • H1 mentions entity hierarchy
  • H2 jumps into salience
  • H2 jumps into schema
  • H2 jumps into topical maps
  • FAQ jumps into internal links
  • no clear center

A stronger version looks like this:

  • H1 defines entity hierarchy
  • first section explains primary, secondary, and supporting entities
  • next section shows where each level belongs on the page
  • next section explains the difference between hierarchy and salience
  • next section turns the concept into a workflow
  • supporting links point to Entity MapSemantic Internal Linking, and Entity Led Brief

Same topic, cleaner structure.

Common mistakes

Treating every related concept as equal

Not every concept deserves top billing. If all entities are treated the same, the page loses focus.

Letting support concepts take over

A page on entity hierarchy can mention schema, internal links, and briefs. It should not drift into becoming a page about one of those topics.

Splitting one page into too many directions

If your headings read like five page ideas stitched together, the hierarchy is off.

Keeping hierarchy only in the outline

If the hierarchy never shows up in the final draft, it has not done its job.

Ignoring internal links

Hierarchy is not just on page. It also affects which sibling pages deserve a link, which anchors fit, and which path the reader should take next. That is why Semantic Internal Linking belongs in this conversation.

A quick checklist

Use this before you publish:

  • Is one entity clearly in charge of the page?
  • Do the H2 sections support that entity instead of competing with it?
  • Are attributes placed close to the entity they describe?
  • Are examples and FAQs supporting the page, not pulling it sideways?
  • Do internal links point to the right sibling pages?
  • Does the brief reflect the same hierarchy as the finished draft?

If the answer to several of those is no, the page structure still needs work.

Final take

Entity hierarchy gives a page order.

It tells you what leads, what supports, and what stays lower in the flow. That one decision improves headings, intros, briefs, internal links, and schema choices.

If you are building pages this way, the next smart stop is Entity Led Brief. If the page still feels loose after briefing, move into Rewrite Existing Content. If you want the full workflow inside the product, go to MIRENA for Content Briefs.

FAQ

What is entity hierarchy in SEO?

Entity hierarchy is the structure that ranks page concepts by role: primary, secondary, and supporting. It helps keep one clear page owner at the center.

Is entity hierarchy the same as entity salience?

No. Hierarchy is about role and order. Salience is about prominence and strength.

Where should the primary entity appear?

It should appear in the title, H1, intro, and the main explanation block near the top of the page. In the MIRENA model, primary entities are placed in top priority content zones, with supporting concepts distributed lower in the page structure.

How does entity hierarchy affect internal linking?

It helps you decide which sibling pages deserve a link and which anchors fit the context. MIRENA’s internal linking logic treats entity relationships, anchor diversity, and cluster alignment as part of the same system.

What should I read after this?

Start with Entity Salience, then Entity Attributes, then Entity Led Brief.