Handsomedan:
Annoys me that I don't know the difference between these types of screws and would likely buy an incorrect screw for a job, if I were doing one that required screws.
All the retail ones are labeled with silly names to help people. Like why would you need outdoor rated "particle board" screws? But they sell them.
I'm usually buying "sheet metal" screws and am not using anything to do with sheet metal.


