value system

A hierarchy of values that all moral beings have, reflected in their choices. Most people's value systems differ. It's an individualistic concept. One's value system is molded by one's virtues or vices, and experiences.

价值观

A person's standards and self-discipline set, based on the common sense and wisdom of knowing what the proper moral rules and discipline are, and the amount of willingness to see themselves and others abide by them.