theory of organic evolution vs evolutionism

theory of organic evolution and evolutionism both are nouns.

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

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

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

Other synonyms of theory of organic evolution include theory of evolution.

theory of organic evolution (noun)	evolutionism (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