noun, noun which may take the genitive case particle 'no'
same kind; similar type; accomplice; partner in crime
Refers to people or things of the same category. When used for people, it often carries a negative connotation of being in the same undesirable group, like accomplices or birds of a feather. The 'no-adjective' use describes something as being of the same kind.
彼も同類の犯罪で捕まった。
He was also arrested for a similar type of crime.
I don't want to be thought of as being the same kind as that guy.
この問題は前に見た同類の問題より難しい。
This problem is harder than similar problems I've seen before.