Is junk, goin, -teme, 3rd Term and the*man. valid or invalid program names?

Answer 1

Looks like you're talking about variables name.
junk and goin are the valid variable names while the rest aren't.
See here
https://www.w3schools.com/JUMP_LINK__&&__python__&&__JUMP_LINK/gloss_python_variable_names.asp

Answer 2

What do you mean by program names? Definitely you can name your program these names, so all are valid i guess