The terms values, ethics and character often get used interchangeably. Below are a few definitions that distinguish between each of these terms.

Values

The principles that guide ethical behavior. (Ethics Resource Center)

Principles, standards or qualities considered worthwhile or desirable. (The American Heritage College Dictionary)

Values can be defined as standards and patterns of choice that guide persons and groups toward satisfaction, fulfillment and meaning. (Dr. Richard Morrill)

Ethics

What is good, right or how we ought to behave. (Ethics Resource Center)

A set of principles of right conduct; moral philosophy. (The American Heritage College Dictionary)

The discipline dealing with what is good and bad and with moral duty and obligation. (Merriam-Webster Dictionary)

Character

Moral or ethical strength; Reputation. (The American Heritage College Dictionary)

The moral qualities that distinguish a person. (Webster's II New Riverside University Dictionary)

The disposition to live ethically in a coherent way over time. (The Harvard Center for Ethics)

That set of moral traits that reflects who we are. (Values Count, LLC)