forthrightness vs candour

forthrightness and candour both are nouns.

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

As nouns, forthrightness and candour are synonyms defined as:

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

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

forthrightness (noun)	candour (noun)
the quality of being honest and straightforward in attitude and speech	the quality of being honest and straightforward in attitude and speech
	ability to make judgments free from discrimination or dishonesty