What is the meaning of Linkage?

A mechanical device that connects things.

A connection or relation between things or ideas.

The act or result of linking: the combination of multiple object files into one executable, library, or object file.

The property of genes of being inherited together.

A set of definitely related languages for which no proto-language can be derived, typically a group of languages within a family that have formed a sprachbund.

A United States foreign policy, during the 1970s détente in the Cold War, of persuading the Soviet Union to co-operate in restraining revolutions in the Third World in return for nuclear and economic concessions.

linkage

Source: wiktionary.org