Group

大隊 /大队

dàduì

(air force formation)

組 /组

zǔ

(number of things or persons being in some relation to each other)

組 /组

zǔ

(subset of a culture or of a society)

群

qún

(number of things or persons being in some relation to each other)

群

qún

(in group theory)

集團 /集团

jítuán

(number of things or persons being in some relation to each other)