| A | B |
| The ethical norm, revealed by God, that imposes obligations on the conscience of each person. | Moral Law |
| The doctrine that rejects Revelation from God and makes reason the sole source of knowledge. | Rationalism |
| The goal of an activity. | Intention |
| The good toward which the will directs itself. | Object |
| The belief that there are no moral truths; that morality changes with each new situation. | Moral Relativism |
| An ethical system that assigns the moral value of an act from the proportion of good and evil effects. | Proportionism |
| The free and responsible decision a person makes to orient, at the core of his or her being, his or her whole existence toward moral good or evil. | Fundamental Option |
| The moral conditions that are added to and modify the moral nature of an action. | Circumstances |
| An ethical system that determines good or evil based on the consequences that follow an act. | Consequentialism |
| Law promulgated by civil authority | Civil Law |
| God’s wisdom as seen in all acts and movements. | Eternal (Divine) Law |
| Human laws that contradict or fail to conform to divine or natural law. | Unjust Law |
| A greater good performed for good intentions is known to be accompanied by an unintended lesser evil and there is no other way to accomplish the greater good. | Principle of Double Effect |
| An ethical theory that derives good and evil from the circumstances that accompany the acting agent. | Situation Ethics |
| The total of social conditons that will allow both individuals and groups to reach their human and spiritual fulfillment more easily. | Common Good |