cream of tartar vs tartar

cream of tartar and tartar both are nouns.

Word	Noun	Adjective	Verb	Adverb
cream of tartar	Yes	No	No	No
tartar	Yes	No	No	No

As nouns, cream of tartar and tartar are synonyms defined as:

Other synonyms of cream of tartar include potassium bitartrate, potassium hydrogen tartrate.

cream of tartar (noun)	tartar (noun)
a salt used especially in baking powder	an incrustation that forms on the teeth and gums
	a fiercely vigilant and unpleasant woman
	a salt used especially in baking powder