What Secondary Keywords To Add to Existing ContentYou can also further optimize your existing content by adding secondary keywords. How to Incorporate Secondary Keywords into Your ContentOnce you’ve discovered the right secondary keywords, you’ll want to add them to your new or existing content. Remember your primary keyword : Secondary keywords are valuable, but stick to your primary keyword in critical spots. Secondary Keywords vs. LSI Keywords or Related KeywordsRelated keywords, or so-called latent semantic indexing (LSI) keywords, are not the same as secondary keywords. Note the secondary keyword examples below:Primary keyword : Vacations in baliSecondary keywords : Trip to bali, bali vacation packagesImportant: Not every article, page, or topic will have relevant secondary keywords.