neurosis vs folie

neurosis and folie both are nouns.

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

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

neurosis: a mental or personality disturbance not attributable to any known neurological or organic dysfunction
folie: (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness

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

neurosis (noun)	folie (noun)
a mental or personality disturbance not attributable to any known neurological or organic dysfunction	(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness