a small group of people within a larger one whose members have some different aims and beliefs to those of the larger group （大团体中的）派系，派别，小集团
rival factions within the administration
政府中的对立派别
adjective factional
connected with the factions of an organization or political party 派系的；派别的
factional conflict
派系冲
noun
Factionalism refers to arguments or disputes between two or more small groups from within a larger group.
There has been a substantial amount of factionalism within the movement.
运动中有大量的宗派之争。