crust vs sima

crust and sima both are nouns.

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

crust (noun)	sima (noun)
the trait of being rude and impertinent; inclined to take liberties	rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium
the outer layer of the Earth
a hard outer layer that covers something

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