Pyramid Diagram

"A Guide to the Project Management Body of Knowledge - Fifth Edition provides guidelines for managing individual projects and defines project management related concepts. It also describes the project management life cycle and its related processes, as well as the project life cycle.
The Guide recognizes 47 processes that fall into five basic process groups and ten knowledge areas that are typical of almost all projects.
The five process groups are:
Initiating,
Planning,
Executing,
Monitoring and Controlling,
Closing.
The ten knowledge areas are:
Project Integration Management,
Project Scope Management,
Project Time Management,
Project Cost Management,
Project Quality Management,
Project Human Resource Management,
Project Communications Management,
Project Risk Management,
Project Procurement Management,
Project Stakeholders Management (added in 5th edition).
Each of the ten knowledge areas contains the processes that need to be accomplished within its discipline in order to achieve an effective project management program. Each of these processes also falls into one of the five basic process groups, creating a matrix structure such that every process can be related to one knowledge area and one process group." [A Guide to the Project Management Body of Knowledge. Wikipedia]
The flow chart example "Project management life cycle" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Flowcharts solution from the area "What is a Diagram" of ConceptDraw Solution Park.