- taxonomist, taxonomer, systematist - a biologist who specializes in the classification of organisms into groups on the basis of their structure and origin and behavior
--1 is a kind of biologist, life scientist
--1 has particulars: lumper; splitter, divider - orderer, systematizer, systematiser, systemizer, systemiser, systematist - an organizer who puts things in order; "Aristotle was a great orderer of ideas"
--2 is a kind of organizer, organiser, arranger