tactfulness vs finesse

tactfulness and finesse both are nouns.

Word	Noun	Adjective	Verb	Adverb
tactfulness	Yes	No	No	No
finesse	Yes	No	No	No

As nouns, finesse is a hyponym of tactfulness; that is, finesse is a word with a more specific, narrower meaning than tactfulness:

tactfulness: consideration in dealing with others and avoiding giving offense
finesse: subtly skillful handling of a situation

Other hyponyms of tactfulness include delicacy, diplomacy, discreetness, address, savoir-faire, tactfulness.

tactfulness (noun)	finesse (noun)
consideration in dealing with others and avoiding giving offense	subtly skillful handling of a situation
Behavior or actions characterized by careful consideration in dealing with others, to avoid giving offense.