fondness vs warmheartedness

fondness and warmheartedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
fondness	Yes	No	No	No
warmheartedness	Yes	No	No	No

As nouns, fondness and warmheartedness are synonyms defined as:

Other synonyms of fondness include affection, affectionateness, heart, philia, tenderness, warmness.

fondness (noun)	warmheartedness (noun)
a quality proceeding from feelings of affection or love	a positive feeling of liking
a positive feeling of liking	a warmhearted feeling
a predisposition to like something