urinary tract vs tract

urinary tract and tract both are nouns.

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

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

urinary tract: the organs and tubes involved in the production and excretion of urine
tract: a system of body parts that together serve some particular purpose

urinary tract (noun)	tract (noun)
the organs and tubes involved in the production and excretion of urine	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