솔직하다 vs 정직하다
I usually hear these words use as "정직하게" or "솔직히". Is there a difference in nuance or are they simply synonyms? Thank you!

Question

Answer

정직하다 is an ethical term (honest)

솔직하다 is an emotional term (frank)

Answer

솔직하다: between being honest and being outspoken.
정직하다: between being honest and being truthful.

그는 정직한 사람이다: He never lies. He is upright and acts morally.
그는 솔직한 사람이다: He says whatever he feels (he has to), even if he knows that his words will upset other people or hurt himself.