Rolaids vs alkalizer

Rolaids and alkalizer both are nouns.

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

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

Rolaids: an antacid
alkalizer: an agent that counteracts or neutralizes acidity (especially in the stomach)

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

Rolaids (noun)	alkalizer (noun)
an antacid	an agent that counteracts or neutralizes acidity (especially in the stomach)