Well, searching on "Ethics vs. morals" I get, among others:

"While they are sometimes used interchangeably, they are different: ethics refer to rules provided by an external source, e.g., codes of conduct in workplaces or principles in religions. Morals refer to an individual's own principles regarding right and wrong."

and

"The article explains the difference between moral and ethical decision-making, based on the Greek and Latin roots of the terms. It argues that ethics is a more individual and interpersonal assessment of values, while morality is a more communal and social assessment of right and wrong."

This could be fun.