Coupling refers to the process of connecting two or more components in a system to work together effectively. In engineering, it often involves linking mechanical parts, such as gears or shafts, to transmit motion or force. In software development, coupling describes how closely related different modules or classes are, impacting their ability to function independently. In the context of relationships, coupling can refer to the pairing of individuals, such as in romantic partnerships or collaborations. Strong coupling indicates a close bond where partners rely heavily on each other, while weak coupling suggests more independence. Understanding coupling helps in analyzing both technical systems and interpersonal dynamics.