chemist vs phytochemist

chemist and phytochemist both are nouns.

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

As nouns, phytochemist is a hyponym of chemist; that is, phytochemist is a word with a more specific, narrower meaning than chemist:

Other hyponyms of chemist include biochemist, nuclear chemist, radiochemist.

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