revolutionary vs revolutionist

revolutionary and revolutionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
revolutionary	Yes	Yes	No	No
revolutionist	Yes	No	No	No

As nouns, revolutionary and revolutionist are synonyms defined as:

revolutionary and revolutionist: a radical supporter of political or social revolution

Other synonyms of revolutionary include subversive, subverter.

revolutionary (noun)	revolutionist (noun)
a radical supporter of political or social revolution	a radical supporter of political or social revolution

revolutionary (adjective)	revolutionist (adjective)
advocating or engaged in revolution
relating to or having the nature of a revolution
of or relating to or characteristic or causing an axial or orbital turn
markedly new or introducing radical change