biochemist vs chemist

biochemist and chemist both are nouns.

Word	Noun	Adjective	Verb	Adverb
biochemist	Yes	No	No	No
chemist	Yes	No	No	No

As nouns, chemist is a hypernym of biochemist; that is, chemist is a word with a broader meaning than biochemist:

biochemist (noun)	chemist (noun)
someone with special training in biochemistry	a scientist who specializes in chemistry
	a health professional trained in the art of preparing and dispensing drugs