What is nav tag used for

Question

i know that it is used for navigationg but i want more simplify

Answer 1

It's where you should put the page's main group of links to other pages or sections of the site.

For example, if I visit amazon.com right now, the top bar of links gives me the links to the main sections of the Amazon site: Department, Prime, Video, Music. This group of links is Amazon's nav bar.

Hope it helps!