+Duality describes a relationship where two distinct entities, often seen as [Opposite](/wiki/opposite), are in fact profoundly interconnected or define each other. This fundamental concept suggests that within many systems, a [Complement](/wiki/complement) exists, revealing a hidden unity in perceived differences.
+## See also
+- [Yin Yang](/wiki/yin_yang)
+- [Polarity](/wiki/polarity)
+- [Binary](/wiki/binary)
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