Prilosec vs alkaliser

Prilosec and alkaliser both are nouns.

Word	Noun	Adjective	Verb	Adverb
Prilosec	Yes	No	No	No
alkaliser	Yes	No	No	No

As nouns, alkaliser is a hypernym of Prilosec; that is, alkaliser is a word with a broader meaning than Prilosec:

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

Other hypernyms of Prilosec include alkalizer, antacid, antiacid, gastric antacid.

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