I found a nice article explaining web browsers.
We all know that there’s “the internet,” but often the difference between “the internet” and a “browser” is confusing.
A browser is the tool you use to access the internet.
For example, if I want to visit google.com, I can use any internet browser I want to get there, much like I can use any car I want to drive to a friend’s house; the destination is the same (a web page or my friend’s home), but the way I access it can be different (Firefox or Internet Explorer browsers, or a Honda or Toyota vehicle).
Click here for the article, which gives a neat breakdown of your browser’s parts.