plotter vs deviser

plotter and deviser both are nouns.

Word	Noun	Adjective	Verb	Adverb
plotter	Yes	No	No	No
deviser	Yes	No	No	No

As nouns, deviser is a hypernym of plotter; that is, deviser is a word with a broader meaning than plotter:

Other hypernyms of plotter include contriver, planner.

plotter (noun)	deviser (noun)
an instrument (usually driven by a computer) for drawing graphs or pictures	a person who makes plans
a member of a conspiracy
a planner who draws up a personal scheme of action
a clerk who marks data on a chart