curiousness vs alienism

curiousness and alienism both are nouns.

Word	Noun	Adjective	Verb	Adverb
curiousness	Yes	No	No	No
alienism	Yes	No	No	No

As nouns, alienism is a hyponym of curiousness; that is, alienism is a word with a more specific, narrower meaning than curiousness:

Other hyponyms of curiousness include exoticism, exoticness, exotism, alienage.

curiousness (noun)	alienism (noun)
the quality of being alien or not native	the quality of being alien
a state of active curiosity	an obsolete term for the study and treatment of mental illness