Tums vs alkalizer

Tums and alkalizer both are nouns.

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

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

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

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

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