original text of a book etc., source / base text (text against which other texts are revised, translated, published, etc.)

head temple / this temple

(music) those pieces of traditional Japanese music composed primarily for the 尺八 (shakuhachi) flute, but also including the 胡弓(こきゅう) (kokyū, “Japanese bowed lute with three or four strings”), and the 琴(こと) (koto)

translator

one's real character

日本鰻: Japanese eel

secondhand books

the real thing (of an event or action); getting serious / (entertainment) performance or (actual) recording (as opposed to a rehearsal)

a Japanese hare (Lepus brachyurus)

foundation, basis, basic fundamentals