事

matter, thing, fact, business, reason, possibly

Kun

こと · つかう · つかえるkoto · tsukau · tsukaeru

On

ジ · ズji · zu

Kun is the Japanese reading, used when the kanji stands alone with kana after it. On comes from Chinese and is mostly used in compound words.

Radical

亅hook

Parts

亅hook一one口mouth