quirk vs strangeness

quirk and strangeness both are nouns.

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

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

Other hypernyms of quirk include unfamiliarity.

quirk (noun)	strangeness (noun)
a narrow groove beside a beading	unusualness as a consequence of not being well known
a strange attitude or habit	the quality of being alien or not native
	(physics) one of the six flavors of quark, the third lightest of all quarks

quirk (verb)	strangeness (verb)
twist or curve abruptly