plot of land vs tract

plot of land and tract both are nouns.

Word	Noun	Adjective	Verb	Adverb
plot of land	Yes	No	No	No
tract	Yes	No	No	No

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

Other hypernyms of plot of land include parcel, parcel of land, piece of ground, piece of land.

plot of land (noun)	tract (noun)
a small area of ground covered by specific vegetation	a bundle of myelinated nerve fibers following a path through the brain
	a system of body parts that together serve some particular purpose
	a brief treatise on a subject of interest; published in the form of a booklet
	an extended area of land