What is Difference between hyberlink and

Keeping this simple

A hyperlink is a html coding that when clicked upon causes the tranfer to either another location within a webpage or site, or to another page at a different website.

A hotspot is a html coding that when the cursor positionis located in the spot some action is enabled. Example might be if you move the cursor to a word such as INDEX, which is coded as a hot spot a drop down menu of hyperlinks might show up. Another example would be when the cursor passes over a particular hot spot a sound is played.

In short a link sends you somewhere
A hotspot initiates some action.

Hope this helps