Duality of patterning is a very important design feature of language that sets human language apart from animal communication systems.

Question

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Duality of patterning refers to the property of human language whereby meaningful signs (words or morphemes) are made up of smaller, meaningless units (phonemes) that can be recombined in different ways to create new signs. This feature allows for the vast expressive power of human language and is not found in animal communication systems, which typically do not exhibit this level of structural complexity.

Duality of Patterning Is a Very Important Design Feature of Language