Ethics is very closely related to morality. However, the term "ethics" doesn't refer to morality itself. Instead, it refers to the study of morality. Ethics distinguishes between good and evil. In other words, ethics is the philosophy of morals. The discipline is mainly associated with what is morally good and bad, right and wrong. It can also be used to refer to any system or theory of moral values or principles.
Ethics is the most practical of the five main areas of philosophy. Every person, whether consciously or not, uses ethics in his or her daily life. Each decision goes through a complex process in the mind before becoming an action.
The subject matter of ethics fundamentally consists of issues essential to judicious decision-making. This links ethics to every field in which decisions must be made: economics, politics, medicine, psychology, and sociology. Ethics still is different from any other subject in that it is mot concerned as much with what we know, but what we should do with that knowledge.