Hmm, perhaps the best approach is to use the official translated word from Chinese: Fajia, to represent the concept and minimize confusion.

Ex: We could translate "Samurai" into "Knight", except a Samurai code of feudalism was completely different than a Knight's code of feudalism (even if both were forms of feudalism). There are also major differences in how the aristocracy worked between Japan and Europe. At some point, its best to just stick with the native tongue.