Mental disease and Psychological disorder

Mental disease noun - Any disease of the mind; the psychological state of someone who has emotional or behavioral problems serious enough to require psychiatric intervention.

Psychological disorder and mental disease are semantically related in mental illness topic. In some cases you can use "Psychological disorder" instead a noun phrase "Mental disease".

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

Mental disease and psychological disorder are semantically related in mental illness topic. Sometimes you can use "Mental disease" instead a noun phrase "Psychological disorder".