passion vs mania

passion and mania both are nouns.

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

As nouns, passion and mania are synonyms defined as:

passion and mania: an irrational but irresistible motive for a belief or action

Other synonyms of passion include cacoethes.

passion (noun)	mania (noun)
the trait of being intensely emotional	an irrational but irresistible motive for a belief or action
any object of warm affection or devotion	a mood disorder; an affective disorder in which the victim tends to respond excessively and sometimes violently
a strong feeling or emotion
a feeling of strong sexual desire
an irrational but irresistible motive for a belief or action
something that is desired intensely