Link or "Hyperlink"

Hyperlink, a reference in an electronic document that lets the user display or activate another document or program

end partial quote from:
https://en.wikipedia.org/wiki/Link

When you click on a word button or "link" (same thing) you are actually clicking on a hyperlink usually made in HTML (hypertext markup language) or a compatible computer language. However, unless you are programming something online you don't need to necessarily know this if you are just a user.

However, it is good to know what you are dealing with and the more you know about technology can protect you in various ways the rest of your lives here on earth as well as your children and grandchildren and great Grandchildren and so on.