clonidine vs antihypertensive

clonidine and antihypertensive both are nouns.

Word	Noun	Adjective	Verb	Adverb
clonidine	Yes	No	No	No
antihypertensive	Yes	No	No	No

As nouns, antihypertensive is a hypernym of clonidine; that is, antihypertensive is a word with a broader meaning than clonidine:

clonidine: an antihypertensive (trade name Catapres) that can be administered orally or via transdermal patches
antihypertensive: a drug that reduces high blood pressure

Other hypernyms of clonidine include antihypertensive drug.

clonidine (noun)	antihypertensive (noun)
an antihypertensive (trade name Catapres) that can be administered orally or via transdermal patches	a drug that reduces high blood pressure