What are the differences between morals and ethics? Are morals standards of behaviour that everybody in a certain group can agree on or is that an ethical code of behaviour? To the Vikings doing the 'right' thing might have been participating in the tradition of finding other villages and ransacking and stealing. This was part of their ethical code of behaviour. Could it be said to be immoral or amoral?
Ethics deal with a set of rules governing conduct that a group of people have agreed upon, while morals deal with an individual's sense of right and wrong. They are intertwined in that each may inherit from the other. However, one may have a "moral dilemma" when their own sense of morals is at conflict with the ethics of their group.
For example, let's say you are a cashier at a grocery store. You agreed at your hiring not to let customers steal. The act of doing that, therefore, is unethical. However, you notice a homeless family wander in and the children are hungry. They take a loaf of bread and some milk and leave without paying. You believe it would be immoral not to let them have the food they need. Your sense of morals and ethics are now at a direct conflict.