encrustation vs crust

encrustation and crust both are nouns.

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

As nouns, encrustation and crust are synonyms defined as:

Other synonyms of encrustation include incrustation.

encrustation (noun)	crust (noun)
a decorative coating of contrasting material that is applied to a surface as an inlay or overlay	the trait of being rude and impertinent; inclined to take liberties
a hard outer layer that covers something	the outer layer of the Earth
the formation of a crust	a hard outer layer that covers something

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