I'm still trying to cotton the difference between traits, roles, attributes, types, prototypes, and signatures.

OK, that's a little facetious, as I know what a prototype is.

The rest I have to go look up. It's annoying to wonder, while I'm reading an article or post, whether the definition of that term is used correctly. So I have to read 4 or 5 entries to determine what the general meaning of one of these terms is, and then if it's useful for what I'm trying to do.