What are keywords?
Search engines look for pages that contain keywords. A keyword should contain the essence of the concept of the website, article or blog. When selecting keywords and keywords specific to your site, you must put yourself in the user’s shoes and think about what a user would type in the search engine to get the concepts that you want to present. The use of keywords is the basis for building good SEO. Keywords can be single words, combinations of words or complex sentences.
These words can be inserted and then combined: in the URL, Meta tags, body text, alt tags, internal and external links to the site, and comments.
You have to be careful because using too many keywords in a short text achieves the opposite effect and then there is the risk of being penalized by google and excluded from the search list.