Does 日本語 have grammatical number or gender?

Answer 1

Hey,

No it doesn't. Nouns can refer to singular or plural. For instance, ki (木) may refer to 'tree' or 'trees.'

Answer 2

Not really, no. ねこ can mean the cat, a cat, cats, a female cat, a male cat... if you obviously become specific by adding details to the sentence, but it's not necessary. The only time gender comes into play with Japanese is for the style of informal speaking where men and women have a different way of speaking.

Answer 3

Japanese does not have number in nouns, although there is now a construct for use with pronouns. Japanese does not have gender in nouns, although it does with some pronouns.