pharmaceutical company vs drug company

pharmaceutical company and drug company both are nouns.

Word	Noun	Adjective	Verb	Adverb
pharmaceutical company	Yes	No	No	No
drug company	Yes	No	No	No

As nouns, pharmaceutical company and drug company are synonyms defined as:

pharmaceutical company and drug company: a company that makes and sells pharmaceuticals

Other synonyms of pharmaceutical company include pharma.

pharmaceutical company (noun)	drug company (noun)
a company that makes and sells pharmaceuticals	a company that makes and sells pharmaceuticals