deterioration

to deteriorate

Kyūjitai form of 実体 (“substance; entity”)

Kazusa Province, an old province of Japan

Rare form of ゼット (zetto, “zed”) (name of the letter Z, z)

actual machine itself; original device (as opposed to an emulation, etc.)

(informal) knowledge

Synonym of チベットノロバ (Chibetto noroba, “kiang”)

Synonym of キュビスム (kyubisumu, “cubism”)

a diary with illustrations, nowadays typically assigned as homework to elementary school students to document their summer vacation