Utilitarianism is a consequentialist theory that evaluates the morality of an action based on its consequences. It holds that the right action is the one that produces the greatest amount of happiness or well-being for the greatest number of people.

Deontological theories, such as Kantian ethics, emphasize the importance of duty and obligation. They argue that the rightness or wrongness of an action is determined by its conformity to universal moral principles, regardless of its consequences.

Virtue ethics, as proposed by Aristotle, emphasizes the importance of developing and strengthening one's moral character. It holds that virtuous actions are those that are performed in accordance with one's virtues, such as courage, honesty, and justice.

The Golden Rule is often associated with virtue ethics, as it emphasizes the importance of treating others in a way that you would want to be treated. It encourages individuals to develop virtues such as kindness, compassion, and fairness.

Libertarianism is a political philosophy that emphasizes the importance of individual rights and liberties. It argues that individuals should be free to make their own choices and pursue their own interests, as long as they do not harm others.

The concept of 'categorical imperative' is central to deontological theories, particularly Kantian ethics. It refers to the idea that moral actions should be performed out of duty or obligation, regardless of their consequences or personal desires.

Communitarianism is a moral theory that emphasizes the importance of the common good of society. It argues that individuals have a duty to contribute to the well-being of their community and that moral actions are those that promote the common good.

The 'veil of ignorance' thought experiment is associated with Rawlsian justice, a theory of social justice developed by John Rawls. It involves imagining a situation where individuals make decisions about the distribution of resources and social policies without knowing their own position in society.

Care ethics is a moral theory that emphasizes the importance of caring for and preventing harm to others. It argues that moral actions are those that are motivated by care and compassion for others, and that relationships and interdependence are central to morality.

The principle of 'double effect' is associated with Thomism, a moral theory based on the teachings of Thomas Aquinas. It allows for actions that have both good and bad consequences, as long as the good consequences outweigh the bad and the bad consequences are not intended.

Existentialism is a moral theory that emphasizes the importance of autonomy and individual self-determination. It argues that individuals have the freedom and responsibility to create their own meaning and values in life, and that moral actions are those that are authentic and true to one's own existence.

The concept of 'moral particularism' is associated with situationism, a moral theory that emphasizes the importance of considering the specific circumstances and context of a situation when making moral judgments. It argues that there are no universal moral principles that apply to all situations.

Conventionalism is a moral theory that emphasizes the importance of following social norms and conventions. It argues that moral actions are those that conform to the accepted standards and expectations of a particular society or culture.

Moral relativism is a moral theory that suggests that moral values are relative to cultural and social contexts. It argues that there is no one objective or universal set of moral values, and that what is considered right or wrong varies from culture to culture and society to society.

Stoicism is a moral theory that emphasizes the importance of achieving inner peace and harmony. It argues that individuals should strive to live in accordance with nature and reason, and that they should accept and endure the challenges and difficulties of life with fortitude and resilience.