cyclooxygenase vs Cox-2

cyclooxygenase and Cox-2 both are nouns.

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

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

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

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

cyclooxygenase (noun)	Cox-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