I want to know, what's the difference between green card and visa?

So the main difference is that a visa is temporary and a green card is permanent residency.

A Visa often serves as an entry permit for a temporary period, typically for activities like tourism, business, or study On the other hand, a Green Card provides you with permanent resident status, allowing you to live and work in the US indefinitely

Annie explained this to the Tee, I agree with all she said

Pls what's the process for renewing a green card?

How do I apply for U.S. citizenship?