Duality: meaning, definitions and examples

Use 'duality' when referring to having two parts or aspects, especially in philosophical or abstract discussions. It can be used to describe the existence of two contrasting or complementary elements within a single entity.

• The duality of human nature is a common theme in literature.
• She felt a sense of duality, caught between two worlds.

Use 'twoness' in more informal or poetic situations to emphasize the quality of being two or the state of being composed of two parts. It is less common in everyday language.

• The twoness of the couple was evident in their matching outfits.
• He often spoke about the spiritual twoness he felt within himself.

Use 'dichotomy' when describing a division or contrast between two things that are represented as being entirely different or opposite. It often indicates a sharp division.

• There is a clear dichotomy between science and religion in this debate.
• The dichotomy between rich and poor continues to widen.

Also used in mathematics and philosophy to describe dual aspects of a concept or system. Mentioned twice, it indicates a repetitive emphasis on its importance in certain fields.

• The duality of particle and wave behavior in physics is quite intriguing.
• In literature, duality often provides a deeper understanding of a character's conflict.

Used to describe resistance or dissent, especially in a political context or when describing a stance against something. It emphasizes active resistance or contrast.

• The new policy faced strong opposition from the public.
• There is significant opposition to the proposed changes in the law.

Refers to a situation where two or more facts, statements, or actions are opposed to each other and cannot both be true at the same time. Often used to highlight inconsistency or logical conflict.

• There's a contradiction between his actions and his words.
• The witness's testimony was full of contradictions.