trachea vs tubule

trachea and tubule both are nouns.

Word	Noun	Adjective	Verb	Adverb
trachea	Yes	No	No	No
tubule	Yes	No	No	No

As nouns, tubule is a hypernym of trachea; that is, tubule is a word with a broader meaning than trachea:

trachea: one of the tubules forming the respiratory system of most insects and many arachnids
tubule: a small tube

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