Short for 四輪駆動. four-wheel drive (vehicle)

forty; 40

quadrangular pyramid

(Buddhism) the four stages of existence: 生有(しょうう) (shōu, “moment of birth”), 本有(ほんぬ) (honnu, “life”), 死有(しう) (shiu, “moment of death”), and 中有(ちゅうう) (chūu, “state between death and the next reincarnation”)

(game of Go) ladder

four sixes; twenty-four

four people

(Buddhism) the four kinds of suffering: birth, old age, disease and death

the four gods 青龍(せいりょう) (Seiryō), 朱雀(すざく) (Suzaku), 白虎(びゃっこ) (Byakko), 玄武(げんぶ) (Genbu), imported to Japan from Chinese mythology

(collective) the four different states of the sky corresponding to the four seasons