What is the difference between project management plan and project execution plan

Question

I was working on a Project Execution Plan for a Project and a team member asked me, what is the difference between the Project Management Plan and Project Execution Plan? Please share your thoughts.

Answer 1

The project execution plan sets out the strategy for managing the project, describes the policies, procedures, and priorities that will be adopted for the project.

While Project management Plan is the planning document, capturing the entire project end-to-end, covering all project phases, from initiation through planning, execution, and closure. 

PMBOK® Guide 5th Edition vs PMBOK® Guide 6th Edition refers to The Project Management Plan is a document that describes how the project will be executed, monitored, and controlled, and closed.
Integrates and consolidates all ancillary management plans, baselines, and other information needed to manage the project.
The project needs to determine which components of the project management plan are needed "

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Answer 2

Take the word "Project" out of it for a moment. There's a big difference between "execution" and "management." It's almost like asking how a team plays vs asking how a team is coached.

Project execution is a fancy way to say "doing the project work." A project execution plan isn't something PMI defines, but if you have one, it should outline how a project team intends to complete the work. By contrast, a project management plan also describes the way the project will be monitored and controlled and closed.