strangeness vs alienism

strangeness and alienism both are nouns.

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

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

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

strangeness (noun)	alienism (noun)
unusualness as a consequence of not being well known	the quality of being alien
the quality of being alien or not native	an obsolete term for the study and treatment of mental illness
(physics) one of the six flavors of quark, the third lightest of all quarks