calque formation vs locution

calque formation and locution both are nouns.

Word	Noun	Adjective	Verb	Adverb
calque formation	Yes	No	No	No
locution	Yes	No	No	No

As nouns, locution is a hypernym of calque formation; that is, locution is a word with a broader meaning than calque formation:

calque formation: an expression introduced into one language by translating it from another language
locution: a word or phrase that particular people use in particular situations

Other hypernyms of calque formation include expression, saying.

calque formation (noun)	locution (noun)
an expression introduced into one language by translating it from another language	a word or phrase that particular people use in particular situations