necrophilism vs mania

necrophilism and mania both are nouns.

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

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

Other hypernyms of necrophilism include cacoethes, passion.

necrophilism (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