necrophilia vs mania

necrophilia and mania both are nouns.

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

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

Other hypernyms of necrophilia include cacoethes, passion.

necrophilia (noun)	mania (noun)
an irresistible sexual attraction to dead bodies	an irrational but irresistible motive for a belief or action
	a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently