mot juste vs phrasing

mot juste and phrasing both are nouns.

Word	Noun	Adjective	Verb	Adverb
mot juste	Yes	No	No	No
phrasing	Yes	No	No	No

As nouns, phrasing is a hypernym of mot juste; that is, phrasing is a word with a broader meaning than mot juste:

Other hypernyms of mot juste include choice of words, diction, phraseology, verbiage, wording.

mot juste (noun)	phrasing (noun)
the appropriate word or expression	the grouping of musical phrases in a melodic line
	the manner in which something is expressed in words