Tums vs antacid

Tums and antacid both are nouns.

Word	Noun	Adjective	Verb	Adverb
Tums	Yes	No	No	No
antacid	Yes	Yes	No	No

As nouns, antacid is a hypernym of Tums; that is, antacid is a word with a broader meaning than Tums:

Tums: an antacid with active ingredient bismuth subsalicylate
antacid: an agent that counteracts or neutralizes acidity (especially in the stomach)

Other hypernyms of Tums include alkaliser, alkalizer, antiacid, gastric antacid.

Tums (noun)	antacid (noun)
an antacid with active ingredient bismuth subsalicylate	an agent that counteracts or neutralizes acidity (especially in the stomach)

Tums (adjective)	antacid (adjective)
	acting to neutralize acid (especially in the stomach)