arranger vs systematist

arranger and systematist both are nouns.

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

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

Other hyponyms of arranger include co-ordinator, coordinator, orderer, systematiser, systematizer, systemiser, systemizer.

arranger (noun)	systematist (noun)
a person who brings order and organization to an enterprise	a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior
a musician who adapts a composition for particular voices or instruments or for another style of performance	an organizer who puts things in order