Is Fina a Shortening?

I don't speak African-American or Latin English for viewers who are not viewing a video, I am a very, very white girl and I'm not from the US. So whatever I know about African-American English is through like hanging out in the internet and watching shows and speaking to friends,. It's not my native variety at all. But I had thought that there was a semantic distinction as well but I don't know the exact boundary so if it. In a sense that we would like write a definition for it versus how do people employ this in the world or maybe two different questions?