systematist vs biologist

systematist and biologist both are nouns.

Word	Noun	Adjective	Verb	Adverb
systematist	Yes	No	No	No
biologist	Yes	No	No	No

As nouns, biologist is a hypernym of systematist; that is, biologist is a word with a broader meaning than systematist:

systematist: a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior
biologist: (biology) a scientist who studies living organisms

Other hypernyms of systematist include life scientist.

systematist (noun)	biologist (noun)
a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior	(biology) a scientist who studies living organisms
an organizer who puts things in order