Refreshing older content is a good opportunity to check whether it still reflects a topic's current related vocabulary, since language and terminology shift over time.
Compare Old Content Against Current Related Terms
Reviewing an older page against a fresh related-term list often reveals terminology or subtopics that have become newly relevant since it was originally written.
Update Outdated Terminology Where Appropriate
Related vocabulary that's fallen out of common use can be replaced with current terminology without necessarily changing the page's core argument.
Use the Refresh as an Opportunity to Fill Genuine Gaps
A content refresh is a natural moment to add coverage of related concepts that have become relevant since the page was first published.
Next step: Use the LSI Tool to generate a current related-term list to compare against an older piece of content you're refreshing.