母国語: mother tongue

a first language, a mother tongue, a native tongue, a native language

(linguistics, uncommon) a proto-language, a mother language (from which later daughter languages evolve)

Bogota

the English language

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

a guard, an escort

American English

和製英語: a Japanese pseudo-anglicism, a Japanese coinage based on English roots

Japanese and English