chemist vs pill pusher

chemist and pill pusher both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemist	Yes	No	No	No
pill pusher	Yes	No	No	No

As nouns, chemist and pill pusher are synonyms defined as:

chemist and pill pusher: a health professional trained in the art of preparing and dispensing drugs

Other synonyms of chemist include apothecary, druggist, pharmacist, pill roller.

chemist (noun)	pill pusher (noun)
a scientist who specializes in chemistry	a health professional trained in the art of preparing and dispensing drugs
a health professional trained in the art of preparing and dispensing drugs