land site vs parcel

land site and parcel both are nouns.

Word	Noun	Adjective	Verb	Adverb
land site	Yes	No	No	No
parcel	Yes	No	Yes	No

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

land site: the piece of land on which something is located (or is to be located)
parcel: an extended area of land

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

land site (noun)	parcel (noun)
the piece of land on which something is located (or is to be located)	the allotment of some amount by dividing something
	a wrapped container
	a collection of things wrapped or boxed together
	an extended area of land

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