Is non-profit entity different or the same as a non-profit organization?
A ToS says that a non-profit entity can't use their IP without permission, am I a non-profit entity despite being some guy in a basement doing it for free?
You're not anything unless you have filed articles of organization. There is a small fee (my state it's $110). You will need a SS number, or an EIN. I'd suggest an EIN bc they're free and take all of 60 seconds to make online.