git vs Github
Git is the version control software that runs in your pc. You don’t even need an acount.
Github (Git - hub) hosts Git repositories (which can be projects) in the cloud and make it possible and easier to colaborative with other people. It is a web service and you also need an account.
Note
This doen’t mean they aren’t connected. Github is a hosting platform that can store our local git repositories in the cloud. This is very important and crucial when collaborating with other in the same project.