Cox vs cyclooxygenase-2

Cox and cyclooxygenase-2 both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cox	Yes	No	No	No
cyclooxygenase-2	Yes	No	No	No

As nouns, cyclooxygenase-2 is a hyponym of Cox; that is, cyclooxygenase-2 is a word with a more specific, narrower meaning than Cox:

Cox: either of two related enzymes that control the production of prostaglandins and are blocked by aspirin
cyclooxygenase-2: an enzyme that makes prostaglandins that cause inflammation and pain and fever

Other hyponyms of Cox include Cox-1, cyclooxygenase-1, Cox-2.

Cox (noun)	cyclooxygenase-2 (noun)
either of two related enzymes that control the production of prostaglandins and are blocked by aspirin	an enzyme that makes prostaglandins that cause inflammation and pain and fever