mania vs emotional disorder

mania and emotional disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
mania	Yes	No	No	No
emotional disorder	Yes	No	No	No

As nouns, emotional disorder is a hypernym of mania; that is, emotional disorder is a word with a broader meaning than mania:

mania: a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently
emotional disorder: any mental disorder not caused by detectable organic abnormalities of the brain and in which a major disturbance of emotions is predominant

Other hypernyms of mania include affective disorder, emotional disturbance, major affective disorder.

mania (noun)	emotional disorder (noun)
an irrational but irresistible motive for a belief or action	any mental disorder not caused by detectable organic abnormalities of the brain and in which a major disturbance of emotions is predominant
a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently