terrain vs parcel

terrain and parcel both are nouns.

Word	Noun	Adjective	Verb	Adverb
terrain	Yes	No	No	No
parcel	Yes	No	Yes	No

As nouns, parcel is a hypernym of terrain; that is, parcel is a word with a broader meaning than terrain:

terrain: a piece of ground having specific characteristics or military potential
parcel: an extended area of land

Other hypernyms of terrain include parcel of land, piece of ground, piece of land, tract.

terrain (noun)	parcel (noun)
a piece of ground having specific characteristics or military potential	the allotment of some amount by dividing something
	a wrapped container
	a collection of things wrapped or boxed together
	an extended area of land

terrain (verb)	parcel (verb)
	make into a wrapped container
	cover with strips of canvas
	divide into parts