zeal vs ardour

zeal and ardour both are nouns.

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

As nouns, zeal and ardour are synonyms defined as:

zeal and ardour: a feeling of strong eagerness (usually in favor of a person or cause)

Other synonyms of zeal include ardor, elan.

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

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

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