tract vs airway

tract and airway both are nouns.

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

As nouns, airway is a hyponym of tract; that is, airway is a word with a more specific, narrower meaning than tract:

Other hyponyms of tract include respiratory tract, urinary tract.

tract (noun)	airway (noun)
a bundle of myelinated nerve fibers following a path through the brain	a commercial enterprise that provides scheduled flights for passengers
a system of body parts that together serve some particular purpose	a duct that provides ventilation (as in mines)
a brief treatise on a subject of interest; published in the form of a booklet	the passages through which air enters and leaves the body
an extended area of land	a designated route followed by airplanes in flying from one airport to another