stir vs quicken

stir is a noun but quicken is not a noun.

Word	Noun	Adjective	Verb	Adverb
stir	Yes	No	Yes	No
quicken	No	No	Yes	No

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

stir (noun)	quicken (noun)
a rapid active commotion
emotional agitation and excitement
a prominent or sensational but short-lived news event

stir (verb)	quicken (verb)
mix or add by stirring	give new life or energy to
summon into action or bring into existence, often as if by magic	show signs of life
affect emotionally	give life or energy to
stir the feelings, emotions, or peace of	move faster
move very slightly	make keen or more acute
move an implement through
to begin moving
stir feelings in