Mariam Q. answered 04/20/19
Let's Learn that Arabic YOU want
This is an excellent question. The short answer to that is أدب indicates expression, be it in behavior particular to the individual, or to the norms of a particular culture or even family. That is why literature is called أدب .. expression manifested in the written form. أخلاق is the philosophical concept of vice and virtue, right and wrong, the collective values and standards. To understand the very subtle difference, lets us assume you meet a Nazi for a TV debate. You are not on the same ethical standards, that is أخلاق but you show your own standards of of civilized expression and communication and that is أدب .