neuroticism vs neurosis

neuroticism and neurosis both are nouns.

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

As nouns, neuroticism and neurosis are synonyms defined as:

neuroticism and neurosis: a mental or personality disturbance not attributable to any known neurological or organic dysfunction

Other synonyms of neuroticism include psychoneurosis.

neuroticism (noun)	neurosis (noun)
a mental or personality disturbance not attributable to any known neurological or organic dysfunction	a mental or personality disturbance not attributable to any known neurological or organic dysfunction