Earlier quoted context omitted.
> To the extent that genders are idiosyncratic, they are hard to learn. Bora, spoken in Peru, has more than 350 of them. Interesting. Wikipedia says that Bora has more than 350 "classifiers", but that doesn't seem to be the same concept as genders. There is a specific section at https://en.wikipedia.org/wiki/Classifier_(linguistics)#Noun_... contrasting classifiers and "noun classes", of which grammatical genders are…
I’m not a linguist either, but I’d say most of this is correct, though incomplete. There’s a bunch of different ways of classifying nouns, including those you mention. A complete list: • Noun classes/genders: usually a fairly small set ( • Noun classifiers: commonly small ( • Numeral classifiers: can be a very large set, occur next to numerals to specify what you’re counting • Possessive classifiers: occur in a posse…
Greville Corbett, for example, who has written a textbook about "Gender" (in the linguistic sense), defines gender as a type of noun classification which triggers agreement. In that sense, he doesn't require that it be centered around male/female or animate/inanimate. Other linguists will use different terminology.