tartar vs crust

tartar and crust both are nouns.

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

As nouns, crust is a hypernym of tartar; that is, crust is a word with a broader meaning than tartar:

Other hypernyms of tartar include encrustation, incrustation.

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

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