| A | B |
| Avarice | A passionate desire for riches that leads one to use money to control others. |
| Ecology | The science that deals with protecting the residence in which human life is developed. |
| Eminent Domain | The principle that states that a government can claim private property, with appropriate payment to the owner, because of a legitimate and overriding public concern. |
| Justice | The constant determination to give each person his due. |
| Principle of Solidarity | The duty of cooperating and harmonizing all of the rights of the individual and the demands that are derived from the sociability of man. It represents the entire effort-a joint effort-to reach the good of the individual and of society. |
| Principle of Subsidiarity | A community of a higher order should not interfere in the internal life of a community of a lower order, depriving the latter of its functions, but rather should support it in case of need and help to coordinate its activity with the activities of the rest of society, always with a view to the common good. With this principle, the CHurch opposes all forms of collectivism or nationalism. |
| Principle of the Common Good | The primacy of the common good over individual interests. The term "common good" is applied to the effort to achieve a social good that makes possible the full development of one's own perfection. |
| Private Property | The right of a person to possess things as his own. |
| Restitution | Reparation of an injustice committed, since, if the damage is not repaired, a permanent state of injustice is produced. |
| Social Justice | The justice that characterizes and regulates relations among indivuduals or among diverse groups and social classes in all areas of social interaction |
| Theft | Taking the goods of another against his reasonable iwll. When theft is carried out with violence, it is called robbery. |