yòng yǔ
choice of words
wording
phraseology
term
xí guàn yòng yǔ
idiom
idiomatic expression
habitual form of speech (grammar)
guàn yòng yǔ
commonly used phrase
idiom
colloquial usage
wǎng luò yòng yǔ
see 網絡語言|网络语言[wang3 luo4 yu3 yan2]
tōng yòng yǔ
common language
lingua franca