mǒu
some
a certain; sb or sth indefinite; such-and-such
This is a pronoun — its meaning is referential rather than compositional.
某些
mǒu xiē
some; certain (things)
某甲
mǒu jiǎ
somebody
某事
mǒu shì
something
某种
mǒu zhǒng
some kind (of)
某处
mǒu chù
somewhere
某人
mǒu rén
someone
某地
mǒu dì
某时
mǒu shí
sometime
某某
mǒu mǒu
so-and-so
某物
mǒu wù