Backlink – SEO WIKI
Backlink is a link located on another resource that leads to the page of your site. Translated from English as “backlink”.
Such return links are the best way to popularize the site, as they affect what place the site will take as a result of search results.
However, if the backlinks are located on sites with different topics, then the search engine moderator will classify such methods as link spam and apply various penalties to your resource, including excluding it from the database.
Therefore, it is better not to take risks, but to place backlinks only on sites with similar topics.