zeal vs fervidness

zeal and fervidness both are nouns.

Word	Noun	Adjective	Verb	Adverb
zeal	Yes	No	No	No
fervidness	Yes	No	No	No

As nouns, fervidness is a hypernym of zeal; that is, fervidness is a word with a broader meaning than zeal:

Other hypernyms of zeal include ardor, ardour, fervency, fervor, fervour, fire.

zeal (noun)	fervidness (noun)
prompt willingness	feelings of great warmth and intensity
a feeling of strong eagerness (usually in favor of a person or cause)
excessive fervor to do something or accomplish some end