ardour vs passionateness

ardour and passionateness both are nouns.

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

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

Other hypernyms of ardour include passion.

ardour (noun)	passionateness (noun)
intense feeling of love	a strong feeling or emotion
a feeling of strong eagerness (usually in favor of a person or cause)
feelings of great warmth and intensity