Yeah, the term "gender" used to mean just like a category, but narrowed in meaning to be specifically about all the stuff we think about these days when we hear it. It makes a lot more sense when you realize it's historically from the same root as "genus" and "genre".
Yeah grammatical gender is just a way to categorize nouns and it just happens to be called gender, at least according to a quick google search.
Yeah, the term "gender" used to mean just like a category, but narrowed in meaning to be specifically about all the stuff we think about these days when we hear it. It makes a lot more sense when you realize it's historically from the same root as "genus" and "genre".