우아하다, 세련되다 , 품격이 있다, 교양이 있다 Here's how I think they are different. - 우아하다: elegant, exquisite. Said of appearance and comportment, of women, arts, decorations, etc. - 세련되다: refined, sophisticated. Of men and women referring to their manners and tastes, sometimes of products. - 품격(이) 있다: dignified, classy. Of (male) personality and style, or products of high class. - 교양(이) 있다: cultured; of learned background. Said of men and women. So 우아 stresses elegant appearance, 세련 refinement, 품격 high class, and 교양 knowledge and culture. Examples: - 그 여배우는 우아한 자태를 드러냈다. The actress showed off her elegant style. - 그는 세련된 취미를 갖고 있다. He has hobbies of refined tastes. - 품격 있는 남성에 맞는 고품격 자켓. A high class jacket that suits a high class man. - 교양 있는 사람이라면 그런 말은 안 한다. A cultured person wouldn't say such a thing.