Demerol vs meperidine hydrochloride

Demerol and meperidine hydrochloride both are nouns.

Word	Noun	Adjective	Verb	Adverb
Demerol	Yes	No	No	No
meperidine hydrochloride	Yes	No	No	No

As nouns, Demerol and meperidine hydrochloride are synonyms defined as:

Demerol and meperidine hydrochloride: a synthetic narcotic drug (trade name Demerol) used to treat pain

Other synonyms of Demerol include meperidine.

Demerol (noun)	meperidine hydrochloride (noun)
a synthetic narcotic drug (trade name Demerol) used to treat pain	a synthetic narcotic drug (trade name Demerol) used to treat pain