Meanings

practical language

global language

metalanguage

national language

male language

young people's language

lie

Tahitian (language)

newly introduced word (e.g. in a textbook)

to talk together

Japanese language school (for non-native speakers)

rakugo research society

twin talk

sociolect spoken in the Tokyo area by gyaru

idiolect

secret language used in the postwar Showa period where certain words are read backwards

old people's talk

early modern Japanese

speech sound

language used by students