Please expalin to me the diffrence between footer tag and a tag?

So as from my understanding: tag ( it’s a hashtag ) - and so what is the purpose of it? when do I have to use it ? ( I’m in the beginning of the curriculum -html )
Thank you in advance!

it’s not an hashtag

a footer tag is a semantic tag in which you can put the part of your page that has the function of footer.

the a (anchor) tag is the tag that creates link to click and open new pages