delirium vs mania

delirium and mania both are nouns.

Word	Noun	Adjective	Verb	Adverb
delirium	Yes	No	No	No
mania	Yes	No	No	No

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

delirium: state of violent mental agitation
mania: a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently

Other hypernyms of delirium include manic disorder.

delirium (noun)	mania (noun)
a usually brief state of excitement and mental confusion often accompanied by hallucinations	an irrational but irresistible motive for a belief or action
state of violent mental agitation	a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently