neurosis vs neuroticism

neurosis and neuroticism both are nouns.

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

As nouns, neurosis and neuroticism are synonyms defined as:

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

Other synonyms of neurosis include psychoneurosis.

neurosis (noun)	neuroticism (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