What do you call a system of conduct, principles, and morals?

The term that best describes a system of conduct, principles, and morals is ethics. Ethics encompass the values and principles that guide an individual's behavior and decisions, forming the foundational beliefs that dictate what is considered right or wrong in a given context. This may involve considerations of fairness, justice, and integrity, which are essential in various professions, including firefighting and management.

In contrast, law refers to formal rules established by a governing authority that must be adhered to. While laws can stem from ethical principles, they are distinct as laws are enforced through legal systems and penalties. Policy refers to guidelines or plans adopted by organizations to govern decision-making and actions within a specific context. Regulations are specific requirements or standards that individuals or organizations must follow, often derived from laws or policies. None of these alternatives encapsulate the broader scope of conduct and moral principles in the same way that ethics does.