hyperlink

As nouns the difference between hyperlink and blogroll

is that hyperlink is hyperlink while blogroll is (internet) a blogger's list of hyperlinks to other blogs that he/she recommends.

As nouns the difference between hyperlink and hotlink

is that hyperlink is some text or a graphic in an electronic document that can be activated to display another document or trigger an action while hotlink is a direct embedding of, or a hyperlink to, a resource on another server, particularly images or video.

As a verb hyperlink

is to point to another document by a hyperlink.