Yuán (simplified Chinese: 缘; traditional Chinese: 緣; pinyin: yuán; Pe̍h-ōe-jī: iân) or Yuanfen (缘分; 緣分, 緣份; yuánfèn; iân-hūn; Vietnamese: duyên phận), "fateful coincidence," is a concept in Chinese and Vietnamese societies describing good and bad chances and potential relationships. It can also be translated as "destiny, luck as conditioned by one's past", or "natural affinity among friends." It is comparable to the concept of karma in Buddhism, but yuanfen is interactive rather than individual. The driving forces and causes behind yuánfèn are said to be actions done in previous incarnations.