systematist vs organiser

systematist and organiser both are nouns.

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

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

Other hypernyms of systematist include arranger, organizer.

systematist (noun)	organiser (noun)
a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior	a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.
an organizer who puts things in order	a person who brings order and organization to an enterprise
	someone who enlists workers to join a union