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

interchangeability

a name of a hole of a wind instrument / five

dense

mutually, reciprocally

ordinal marker, often with prefix 第 (used like -st, -nd, -rd, -th in English).

to give something, to do something for someone

Japanese reading of the Chinese surname Wu. / the ancient State of Wu / (chiefly compounds) China, Chinese

China / to give something, to do something for someone

the Horse, the seventh of the twelve Earthly Branches