partition vs partitionist

partition and partitionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
partition	Yes	No	Yes	No
partitionist	Yes	No	No	No

partition (noun)	partitionist (noun)
the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart	an advocate of partitioning a country
a vertical structure that divides or separates (as a wall divides one room from another)
(anatomy) a structure that separates areas in an organism
(computer science) the part of a hard disk that is dedicated to a particular operating system or application and accessed as a single unit

partition (verb)	partitionist (verb)
separate or apportion into sections
divide into parts, pieces, or sections