meclizine hydrochloride vs meclizine

meclizine hydrochloride and meclizine both are nouns.

Word	Noun	Adjective	Verb	Adverb
meclizine hydrochloride	Yes	No	No	No
meclizine	Yes	No	No	No

As nouns, meclizine hydrochloride and meclizine are synonyms defined as:

meclizine hydrochloride and meclizine: an antihistamine (trade name Antivert) used to treat or prevent motion sickness

Other synonyms of meclizine hydrochloride include Antivert.

meclizine hydrochloride (noun)	meclizine (noun)
an antihistamine (trade name Antivert) used to treat or prevent motion sickness	an antihistamine (trade name Antivert) used to treat or prevent motion sickness