That's certainly one definition of Ethics, as a field of study. However, it's not the exclusive definition of the word. Let us refer to Oxford: ethic noun /

That's certainly one definition of Ethics, as a field of study. However, it's not the exclusive definition of the word. Let us refer to Oxford: ethic noun /ˈeθɪk/ /ˈeθɪk/ ethics [plural] Moral principles that control or influence a person’s behaviour Professional/business/medical ethics To draw up a code of ethics. He began to question the ethics of his position. [singular] System of moral principles or rules of behaviour The ethic of personal achievement is very strong in western societies. ethics [uncountable] The branch of philosophy that deals with moral principles