alienism vs strangeness

alienism and strangeness both are nouns.

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

As nouns, strangeness is a hypernym of alienism; that is, strangeness is a word with a broader meaning than alienism:

Other hypernyms of alienism include curiousness, foreignness.

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