sector vs parcel of land

sector and parcel of land both are nouns.

Word	Noun	Adjective	Verb	Adverb
sector	Yes	No	No	No
parcel of land	Yes	No	No	No

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

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

sector (noun)	parcel of land (noun)
measuring instrument consisting of two graduated arms hinged at one end	an extended area of land
a particular aspect of life or activity
a social group that forms part of the society or the economy
a portion of a military position
the minimum track length that can be assigned to store information; unless otherwise specified a sector of data consists of 512 bytes
a plane figure bounded by two radii and the included arc of a circle