Incumbency and Reign

Incumbency noun - Something one must do because of prior agreement.

Reign is a synonym for incumbency in regime topic. In some cases you can use "Reign" instead a noun "Incumbency", when it comes to topics like tenure.

Nearby Word: incumbent

Reign noun - Controlling power or influence over others.

Incumbency is a synonym for reign in rule topic. You can use "Incumbency" instead a noun "Reign", if it concerns topics such as regime, period in office.

Nearby Words: reigning, reigned