clearing vs tract

clearing and tract both are nouns.

Word	Noun	Adjective	Verb	Adverb
clearing	Yes	No	No	No
tract	Yes	No	No	No

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

clearing: a tract of land with few or no trees in the middle of a wooded area
tract: an extended area of land

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

clearing (noun)	tract (noun)
the act of freeing from suspicion	a bundle of myelinated nerve fibers following a path through the brain
the act of removing solid particles from a liquid	a system of body parts that together serve some particular purpose
a tract of land with few or no trees in the middle of a wooded area	a brief treatise on a subject of interest; published in the form of a booklet
	an extended area of land