internationalist vs internationalism

internationalist and internationalism both are nouns.

Word	Noun	Adjective	Verb	Adverb
internationalist	Yes	Yes	No	No
internationalism	Yes	No	No	No

internationalist (noun)	internationalism (noun)
an advocate of internationalism	quality of being international in scope
a member of a socialist or communist international	the doctrine that nations should cooperate because their common interests are more important than their differences

internationalist (adjective)	internationalism (adjective)
influenced by or advocating internationalism