Zantac vs ranitidine

Zantac and ranitidine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zantac	Yes	No	No	No
ranitidine	Yes	No	No	No

As nouns, Zantac and ranitidine are synonyms defined as:

Zantac and ranitidine: a histamine blocker and antacid (trade name Zantac) used to treat peptic ulcers and gastritis and esophageal reflux

Zantac (noun)	ranitidine (noun)
a histamine blocker and antacid (trade name Zantac) used to treat peptic ulcers and gastritis and esophageal reflux	a histamine blocker and antacid (trade name Zantac) used to treat peptic ulcers and gastritis and esophageal reflux