crust vs tartar

crust and tartar both are nouns.

Word	Noun	Adjective	Verb	Adverb
crust	Yes	No	Yes	No
tartar	Yes	No	No	No

As nouns, tartar is a hyponym of crust; that is, tartar is a word with a more specific, narrower meaning than crust:

Other hyponyms of crust include calculus, tophus.

crust (noun)	tartar (noun)
the trait of being rude and impertinent; inclined to take liberties	an incrustation that forms on the teeth and gums
the outer layer of the Earth	a fiercely vigilant and unpleasant woman
a hard outer layer that covers something	a salt used especially in baking powder

crust (verb)	tartar (verb)
form a crust or form into a crust