directness vs forthrightness

directness and forthrightness both are nouns.

Word	Noun	Adjective	Verb	Adverb
directness	Yes	No	No	No
forthrightness	Yes	No	No	No

As nouns, directness and forthrightness are synonyms defined as:

directness and forthrightness: the quality of being honest and straightforward in attitude and speech

Other synonyms of directness include candidness, candor, candour, frankness.

directness (noun)	forthrightness (noun)
trueness of course toward a goal	the quality of being honest and straightforward in attitude and speech
the quality of being honest and straightforward in attitude and speech