大

large, big

Kun

おお- · おおきい · -おおいにoo · ookii · ooinie.g.大きなおおきなbig

On

ダイ · タイdai · taie.g.大学だいがくuniversity

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

大big