Entity Salience vs. Entity Frequency: What Google Actually Uses

The Death of Keyword Density

For years, SEOs focused on keyword frequency—the simple percentage of times a term appears in a document. However, search engines have long evolved past bag-of-words counting. Today, Google uses **Entity Salience Centrality** to understand what a page is truly about.

What is Entity Salience?

Salience measures the **central importance** of an entity to a text. Rather than counting how many times "Apple" appears in a document, a salience algorithm evaluates: 1. **Grammatical Role**: Is the entity the subject of the sentence, the object, or part of a prepositional phrase? Subjects receive significantly higher salience. 2. **Positional Prominence**: Does the entity appear in the H1, H2, or the introductory paragraph? 3. **Co-reference Resolution**: Does the text refer back to the entity using pronouns ("it", "they", "she")?

A document can repeat a brand name 20 times and still have lower salience than a document that states it once as the central actor of a comprehensive research paper.

How to Optimize for Entity Salience

To make sure search engines identify your core entities as primary: * **Use Subject-Verb-Object Structures**: Place your primary entity as the grammatical subject of key sentences. * **Leverage Heading Hierarchies**: Ensure H1 and H2 elements contain exact entity matches. * **Enrich Entity Context**: Surround your brand or product name with recognized industry terminology to help NLP engines resolve entity boundaries.