asthenosphere vs crust

asthenosphere and crust both are nouns.

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

asthenosphere (noun)	crust (noun)
the lower layer of the crust	the trait of being rude and impertinent; inclined to take liberties
	the outer layer of the Earth
	a hard outer layer that covers something

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