LSI Keywords are semantically linked to the principal term used by visitors in search engines.
When we use LSI keywords to improve a page, the keyword relevance will rise. LSI allows you to optimize keywords on a web page without worrying about keyword stuffing. Google's algorithm uses LSI keywords to determine the relevance of a search phrase. It aids search engines in deciphering the semantic structure of keywords and extracting the meaning of the text to provide the best SERP results.