evolutionism vs theory of evolution

evolutionism and theory of evolution both are nouns.

Word	Noun	Adjective	Verb	Adverb
evolutionism	Yes	No	No	No
theory of evolution	Yes	No	No	No

As nouns, evolutionism and theory of evolution are synonyms defined as:

evolutionism and theory of evolution: (biology) a scientific theory of the origin of species of plants and animals

Other synonyms of evolutionism include theory of organic evolution.

evolutionism (noun)	theory of evolution (noun)
(biology) a scientific theory of the origin of species of plants and animals	(biology) a scientific theory of the origin of species of plants and animals