pharmacy vs apothecary's shop

pharmacy and apothecary's shop both are nouns.

Word	Noun	Adjective	Verb	Adverb
pharmacy	Yes	No	No	No
apothecary's shop	Yes	No	No	No

As nouns, pharmacy and apothecary's shop are synonyms defined as:

pharmacy and apothecary's shop: a retail shop where medicine and other articles are sold

Other synonyms of pharmacy include chemist's, chemist's shop, drugstore.

pharmacy (noun)	apothecary's shop (noun)
a retail shop where medicine and other articles are sold	a retail shop where medicine and other articles are sold
the art and science of preparing and dispensing drugs and medicines