change taste vs bitter

change taste is not a noun while bitter is a noun.

Word	Noun	Adjective	Verb	Adverb
change taste	No	No	Yes	No
bitter	Yes	Yes	Yes	Yes

As verbs, bitter is a hyponym of change taste; that is, bitter is a word with a more specific, narrower meaning than change taste:

Other hyponyms of change taste include dulcify, dulcorate, edulcorate, sweeten, acetify, acidify, acidulate, sour.

change taste (noun)	bitter (noun)
	the property of having a harsh unpleasant taste
	the taste experience when quinine or coffee is taken into the mouth
	English term for a dry sharp-tasting ale with strong flavor of hops (usually on draft)

change taste (adjective)	bitter (adjective)
	proceeding from or exhibiting great hostility or animosity
	very difficult to accept or bear
	causing a sharply painful or stinging sensation; used especially of cold
	marked by strong resentment or cynicism
	expressive of severe grief or regret
	causing a sharp and acrid taste experience
	harsh or corrosive in tone

change taste (verb)	bitter (verb)
alter the flavor of	make bitter

change taste (adverb)	bitter (adverb)
	extremely and sharply