組
ソ, く.む, くみ, ぐみ
association, braid, plait, construct, assemble, unite, cooperate, grapple
JLPT3 G2 S11 F204
As per 且# (pile) + 糸 thread → threads piled in braiding (compare 素) → *braid* → *put together*; *assemble*; *construct*; *cooperate*; *set*; *suit*; *assortment*; *group of people* → *class*; *crew*; *party*; *company*.
[Full Kanji Etymology List]