halfheartedness vs partialness

halfheartedness and partialness both are nouns.

Word	Noun	Adjective	Verb	Adverb
halfheartedness	Yes	No	No	No
partialness	Yes	No	No	No

As nouns, partialness is a hypernym of halfheartedness; that is, partialness is a word with a broader meaning than halfheartedness:

halfheartedness: the characteristic of being half-hearted; not sincere; lacking full energy, effort, commitment, or resolve.
partialness: the state of being only a part; not total; incomplete

halfheartedness (noun)	partialness (noun)
the characteristic of being half-hearted; not sincere; lacking full energy, effort, commitment, or resolve.	the state of being only a part; not total; incomplete