respiratory tract vs tract

respiratory tract and tract both are nouns.

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

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

respiratory tract: the passages through which air enters and leaves the body
tract: a system of body parts that together serve some particular purpose

respiratory tract (noun)	tract (noun)
the passages through which air enters and leaves the body	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