omeprazole vs antiacid

omeprazole and antiacid both are nouns.

Word	Noun	Adjective	Verb	Adverb
omeprazole	Yes	No	No	No
antiacid	Yes	No	No	No

As nouns, antiacid is a hypernym of omeprazole; that is, antiacid is a word with a broader meaning than omeprazole:

omeprazole: antacid (trade name Prilosec) that suppresses acid secretion in the stomach
antiacid: an agent that counteracts or neutralizes acidity (especially in the stomach)

Other hypernyms of omeprazole include alkaliser, alkalizer, antacid, gastric antacid.

omeprazole (noun)	antiacid (noun)
antacid (trade name Prilosec) that suppresses acid secretion in the stomach	an agent that counteracts or neutralizes acidity (especially in the stomach)