aberration vs folie

aberration and folie both are nouns.

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

As nouns, folie is a hypernym of aberration; that is, folie is a word with a broader meaning than aberration:

aberration: a disorder in one's mental state
folie: (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness

Other hypernyms of aberration include disturbance, mental disorder, mental disturbance, psychological disorder.

aberration (noun)	folie (noun)
an optical phenomenon resulting from the failure of a lens or mirror to produce a good image	(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness
a disorder in one's mental state
a state or condition markedly different from the norm