Linkage (noun)

1. The action of linking or the state of being linked.
2. A mechanical or electrical connection between two or more parts.
3. A relationship or connection between different things or events.
4. A group of genes on a chromosome that are inherited together.

Origin:

Derived from the verb 'link' meaning to connect, join or associate. first recorded in english in the late 16th century.

Examples:

1. The linkage between the two parts was accomplished by a hinge.
2. The linkage of the gears allowed the machinery to function properly.
3. There is a strong linkage between poverty and crime in this area.
4. The linkage of the genes determines the traits that are passed down from one generation to the next.
5. The linkage of events in the story created a suspenseful plot.