mydriatic vs mydriatic drug

mydriatic and mydriatic drug both are nouns.

Word	Noun	Adjective	Verb	Adverb
mydriatic	Yes	No	No	No
mydriatic drug	Yes	No	No	No

As nouns, mydriatic and mydriatic drug are synonyms defined as:

mydriatic and mydriatic drug: a drug that causes the pupil of the eye to dilate; used to aid eye examinations

mydriatic (noun)	mydriatic drug (noun)
a drug that causes the pupil of the eye to dilate; used to aid eye examinations	a drug that causes the pupil of the eye to dilate; used to aid eye examinations