mental disturbance vs psychological disorder

mental disturbance and psychological disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
mental disturbance	Yes	No	No	No
psychological disorder	Yes	No	No	No

As nouns, mental disturbance and psychological disorder are synonyms defined as:

mental disturbance and psychological disorder: (psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness

Other synonyms of mental disturbance include disturbance, folie, mental disorder.

mental disturbance (noun)	psychological disorder (noun)
(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness	(psychiatry) a psychological disorder of thought or emotion; a more neutral term than mental illness