internationalism vs ism

internationalism and ism both are nouns.

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

As nouns, ism is a hypernym of internationalism; that is, ism is a word with a broader meaning than internationalism:

internationalism: the doctrine that nations should cooperate because their common interests are more important than their differences
ism: a belief (or system of beliefs) accepted as authoritative by some group or school

Other hypernyms of internationalism include doctrine, philosophical system, philosophy, school of thought.

internationalism (noun)	ism (noun)
quality of being international in scope	a belief (or system of beliefs) accepted as authoritative by some group or school
the doctrine that nations should cooperate because their common interests are more important than their differences