Ethics can be seen as an internal guidance system that manifests as morals. Ethics function within a social system in which morals are applied since they determine ways in which we can achieve morality.
A most fitting example of the distinction between ethics and morality is with the precarious situation of lawyers. For example, while a lawyer's personal moral code may see murder immoral and reprehensible, ethics will demand that his guilty client be defended as vigorously as possible, even when the lawyer knows the party is guilty and if freed would potentially lead to more crime. In a situation like this, legal ethics must override personal morals for the greater good of upholding a justice system in which the accused are given a fair trial and the prosecution must prove ...
Ethics and morality can also be seen as two distinct concepts. Ethics is more as a formal system or set of rules adopted by a group of people. It is internally defined and adopted. Morals on the other hand are externally imposed on other people and relate more to personal character.