round / lump / ball / to roll into a ball / to gather / regiment / group / society / classifier for a lump or a soft mass: wad (of paper), ball (of wool), cloud (of smoke)
to leave / to depart / to separate / to distinguish / to classify / other / another / don't ...! / to pin / to stick (sth) in / (noun suffix) category (e.g. 性別|性别[xing4 bie2], 派別|派别[pai4 bie2])