Stick with the basic definition:
**ethics **n.
**1. **the study of standards of conduct and moral judgment; moral philosophy
**2. **a treatise on this study
**3. **with sing. or pl. v.] the system or code of morals of a particular person, religion, group, profession, etc.
Syn. rules of conduct, morality, mores, morals, moral code, decency, integrity, moral conduct, social values, moral practice, principles, values, standards, code of right and wrong, natural law, honesty, goodness, honor, social laws, categorical imperative, the Golden Rule, bushido (Japanese).
Research the published ethical standards of a particular profession and articles and books on how they actually comply, or not, with their ethical standards.
Should be an interesting exploration. Compare and contrast the ideal and reality.
You might consider the professions you might want to build your career in.