I never talked much to people that use a lot of expressions, and the usage of Spanish terms, like “nada” or “amigo”, as I could observe from the outside, felt inconsistent. And upon thinking on that, it got me curious, is it common to use such expressions or not?
I also want to point out that US English used by Latinos (i.e. Spanglish and Chicano English) is completely separated from Spanish terms used by people who aren’t Latino