cyclooxygenase vs enzyme

cyclooxygenase and enzyme both are nouns.

Word	Noun	Adjective	Verb	Adverb
cyclooxygenase	Yes	No	No	No
enzyme	Yes	No	No	No

As nouns, enzyme is a hypernym of cyclooxygenase; that is, enzyme is a word with a broader meaning than cyclooxygenase:

cyclooxygenase: either of two related enzymes that control the production of prostaglandins and are blocked by aspirin
enzyme: any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions

cyclooxygenase (noun)	enzyme (noun)
either of two related enzymes that control the production of prostaglandins and are blocked by aspirin	any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions