～側
～がわ · ～gawa · JLPT N5 · noun
side
側 = person 亻 + rule 則: the side a person stands on
側 (がわ) attaches to a noun to mean that side or party: 右側 = right side, 相手側 = the other party's side. The kanji pairs the person radical 亻 with 則, which also supplies its on-reading ソク as in 側面, side face.