tract vs treatise

tract and treatise both are nouns.

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

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

tract: a brief treatise on a subject of interest; published in the form of a booklet
treatise: a formal exposition

tract (noun)	treatise (noun)
a bundle of myelinated nerve fibers following a path through the brain	a formal exposition
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