quieten vs assuage

quieten and assuage both are verbs.

Word	Noun	Adjective	Verb	Adverb
quieten	No	No	Yes	No
assuage	No	No	Yes	No

As verbs, assuage is a hyponym of quieten; that is, assuage is a word with a more specific, narrower meaning than quieten:

Other hyponyms of quieten include lull, compose, appease, conciliate, gentle, gruntle, lenify, mollify, pacify, placate.

quieten (verb)	assuage (verb)
cause to be quiet or not talk	provide physical relief, as from pain
make calm or still	satisfy (thirst)
become quiet or quieter	cause to be more favorably inclined; gain the good will of