expression (by words, facial, attitude) / representation (of art, play, music) / performance (of actor, player, ...)

express

letter challenging someone to a duel

Short for 日本国 (Nihon-koku): Japan (a country and archipelago in East Asia) / a surname

Japan

(archaic) Japan

Japanese pseudo-anglicisms: Japanese coinages using English roots, not in use in anglophone countries nor by English native speakers, but only by speakers of Japanese

gender role

(linguistics) "role language": unique language usage serving as a marker of social identity in fictional speech

importance