quiesce vs hush

quiesce is not a noun while hush is a noun.

Word	Noun	Adjective	Verb	Adverb
quiesce	No	No	Yes	No
hush	Yes	No	Yes	No

As verbs, quiesce and hush are synonyms defined as:

Other synonyms of quiesce include pipe down, quiet, quiet down, quieten.

quiesce (noun)	hush (noun)
	(poetic) tranquil silence

quiesce (verb)	hush (verb)
become quiet or quieter	become quiet or still; fall silent
	cause to be quiet or not talk
	run water over the ground to erode (soil), revealing the underlying strata and valuable minerals
	wash by removing particles
	become quiet or quieter