Decoupling

(electricity) Preventing transfer or feedback of energy from one circuit to another.

The occurrence of returns on asset classes diverging from their normal pattern of correlation.

Investopedia Says:
Take for example stock and corporate bond returns, which normally rise and fall together. If returns on stocks were to increase and returns on bonds were to decrease this would illustrate an example of decoupling.

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The separating of building elements to reduce the transfer of heat, sound, or physical loads from one element to another.