disturb vs disquiet

disturb is not a noun while disquiet is a noun.

Word	Noun	Adjective	Verb	Adverb
disturb	No	No	Yes	No
disquiet	Yes	No	Yes	No

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

disturb (noun)	disquiet (noun)
	the trait of seeming ill at ease
	a feeling of mild anxiety about possible developments

disturb (verb)	disquiet (verb)
destroy the peace or tranquility of	disturb in mind or make uneasy or cause to be worried or alarmed
damage as if by shaking or jarring
tamper with
change the arrangement or position of
move deeply