upper respiratory tract vs trachea

upper respiratory tract and trachea both are nouns.

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

upper respiratory tract (noun)	trachea (noun)
the nose and throat and trachea	membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
	one of the tubules forming the respiratory system of most insects and many arachnids