Why would someone downvote this question. If you care about the difference, you shouldn’t downvote someone that’s wanting to learn…
As for the question: Nitter is a proxy service that lets people view content without giving Twitter anything, and avoiding any tracking, analytics, etc. Also some networks have blocked Twitter outright, and so they won’t see your content unless it is proxied.
Similar tech exists for other sites too.
Twig@sopuli.xyz 18 hours ago
Not using Twitter directly