Benadryl vs diphenhydramine

Benadryl and diphenhydramine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Benadryl	Yes	No	No	No
diphenhydramine	Yes	No	No	No

As nouns, Benadryl and diphenhydramine are synonyms defined as:

Benadryl and diphenhydramine: antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness

Benadryl (noun)	diphenhydramine (noun)
antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness	antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness