* It's ethical to give credit where credit is due. (Describing a moral principle)
* The company is committed to ethical business practices. (Describing a company's values)
* She made the ethical choice to report the wrongdoing. (Describing a decision based on morals)
* He questioned the ethical implications of the research. (Discussing moral considerations)
* The lawyer argued that the evidence was obtained unethically. (Describing something that violates moral principles)
The word "ethical" can be used as an adjective to describe something that is morally right or just, or as a noun to refer to moral principles.