fervour vs passion

fervour and passion both are nouns.

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

As nouns, passion is a hypernym of fervour; that is, passion is a word with a broader meaning than fervour:

Other hypernyms of fervour include passionateness.

fervour (noun)	passion (noun)
feelings of great warmth and intensity	the trait of being intensely emotional
the state of being emotionally aroused and worked up	any object of warm affection or devotion
	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