adeptness vs deftness

adeptness and deftness both are nouns.

Word	Noun	Adjective	Verb	Adverb
adeptness	Yes	No	No	No
deftness	Yes	No	No	No

As nouns, adeptness and deftness are synonyms defined as:

adeptness and deftness: skillful performance or ability without difficulty

Other synonyms of adeptness include adroitness, facility, quickness.

adeptness (noun)	deftness (noun)
skillful performance or ability without difficulty	skillful performance or ability without difficulty