軽

lightly, trifling, unimportant

Kun

かるい · かろやか · かろんじるkarui · karoyaka · karonjirue.g.軽いかるいlight (in weight)

On

ケイ · キョウ · キンkei · kyou · kin

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

車cart

Parts

車cart土earth又again