Translation guide
The concept of two fundamental principles, aspects, or states existing together, often in contrast or complement. This guide covers philosophical, descriptive, and technical uses.
Expressing the idea of two opposing yet complementary principles or aspects of existence.
The standard term for duality in philosophy, religion, and abstract discussions. Refers to the state of having two fundamental principles.
陰陽は二元性の概念です。
Yin and yang is a concept of duality.
Emphasizes two sides or aspects of a single thing, like a coin. Often used for personality or character.
彼の性格には二面性がある。
His personality has a duality.
Used in mathematics, physics, and formal logic for duality (e.g., wave-particle duality). Technical term.
波動と粒子の双対性は量子力学の基本です。
Wave-particle duality is fundamental to quantum mechanics.
Describing a person or thing having two contrasting qualities, often good and evil.
Literally 'has two-sidedness'. The most natural way to say someone or something has a dual nature.
人間は誰でも二面性がある。
Everyone has a duality to their nature.
Means 'two contradictory aspects'. More descriptive and less of a set phrase.
彼には相反する二つの面がある。
He has two contradictory sides.
Referring to a formal correspondence between two theories or systems.
The standard technical term for duality in math and physics.
ポアンカレ双対性はトポロジーで重要です。
Poincaré duality is important in topology.
Shorter form, often used as a prefix or in compounds like 双対問題 (dual problem).
この問題の双対を考えてみよう。
Let's consider the dual of this problem.
二元性 (nigen-sei) is about two fundamental principles (e.g., good vs evil, mind vs body). 二面性 (nimen-sei) is about two sides of the same thing (e.g., a person's public and private faces). Use 二元性 for abstract dualism, 二面性 for dual aspects.
Saying 彼の性格には二元性がある sounds odd; it implies a philosophical dualism. Use 二面性 for personality.