a specific mathematical function used in statistics to describe the dependence between multiple random variables

decoupling (electronics or computing)

charge-coupled device (CCD)

electric charge coupling

to decouple

Couple's Retreat Garden in Suzhou, Jiangsu

to live together (as husband and wife)

coupled transistor (electronics)

to have a private conversation in pairs; to have a tête-à-tête

optocoupler (electronics)