labetalol vs antihypertensive

labetalol and antihypertensive both are nouns.

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

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

labetalol: antihypertensive drug (trade names Trandate and Normodyne) that blocks alpha and beta-adrenergic receptors of the sympathetic nervous system (leading to a decrease in blood pressure)
antihypertensive: a drug that reduces high blood pressure

Other hypernyms of labetalol include antihypertensive drug, blocker, blocking agent.

labetalol (noun)	antihypertensive (noun)
antihypertensive drug (trade names Trandate and Normodyne) that blocks alpha and beta-adrenergic receptors of the sympathetic nervous system (leading to a decrease in blood pressure)	a drug that reduces high blood pressure