aberrance vs aberration

aberrance and aberration both are nouns.

Word	Noun	Adjective	Verb	Adverb
aberrance	Yes	No	No	No
aberration	Yes	No	No	No

As nouns, aberrance and aberration are synonyms defined as:

aberrance and aberration: a state or condition markedly different from the norm

Other synonyms of aberrance include aberrancy, deviance.

aberrance (noun)	aberration (noun)
a state or condition markedly different from the norm	an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
	a disorder in one's mental state
	a state or condition markedly different from the norm