The practice of loading a webpage with keywords just to manipulate search engine for better ranking on the SERP.

It is blackhat seo method. I think you don't use it. Because Google is too smart. Your site can have been disappears on search engines

"Keyword stuffing" refers to the practice of loading a webpage with keywords or numbers in an attempt to manipulate a site's ranking in Google search results. Often these keywords appear in a list or group, or out of context

Keyword stuffing is the "black hat" search engine optimization strategy of directly or deceptively including a target keyword numerous times on a page. Though keyword stuffing was effective for many ecommerce businesses in the early days of SEO, it is now likely to incur harsh Google penalties and is not viewed as an effective method to improve search rankings.

"Keyword stuffing" refers to the apply of loading a webpage with keywords or numbers in an endeavor to control a site's ranking in Google search results. usually these keywords seem during a list or cluster, or out of context (not as natural prose).