Header tags are one of the most natural places to work in related terms, since each heading can reflect a genuinely distinct subtopic rather than repeating the main phrase.
Let Each Heading Reflect a Real Subtopic
A heading built around a related concept, rather than a rephrasing of the main keyword, gives readers and search engines a clearer sense of the page's actual structure.
Avoid Repeating the Same Phrase in Every Heading
Headings that all restate the primary keyword read as repetitive and miss the opportunity to signal broader topical coverage.
Match Heading Order to a Logical Flow
Organizing headings around related subtopics in a sensible sequence makes the content easier to follow, not just more semantically diverse.
Next step: Use the LSI Tool to generate related subtopics worth turning into distinct headings.