strangeness vs curiousness

strangeness and curiousness both are nouns.

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

As nouns, strangeness and curiousness are synonyms defined as:

Other synonyms of strangeness include foreignness.

strangeness (noun)	curiousness (noun)
unusualness as a consequence of not being well known	the quality of being alien or not native
the quality of being alien or not native	a state of active curiosity
(physics) one of the six flavors of quark, the third lightest of all quarks