Difference between Manager and Handler

Manager

Part of speech: noun

Definition: A person whose job is to manage something, such as a business, a restaurant or a sports team. The head coach. An administrator, for a singer or group;

Example sentence: That is what a good manager does - you study and think and discuss, and you come up with a model of playing.

Handler

Part of speech: noun

Definition: {{literally} One who handles something (especially manually) or someone.A controller, trainer, someone who handles a specified thing, animal or person (especially a prizefighter), which can be specified in a combinationA subroutine that handles a particular situation such as an event or exception.