forthrightness vs frankness

forthrightness and frankness both are nouns.

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

As nouns, forthrightness and frankness are synonyms defined as:

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

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

forthrightness (noun)	frankness (noun)
the quality of being honest and straightforward in attitude and speech	the quality of being honest and straightforward in attitude and speech
	the trait of being blunt and outspoken