What you have listed above are called the stages (or process groups), and the phases.
The 6 project management phases are:
- Initiation phase
- Definition phase
- Design phase
- Development phase
- Implementation phase
- Follow-up phase
Note that the above 6 project management phases apply only in IT projects.
Sometimes, people refer to the following sarcastic list when they say the 6 project management phases:
- Search for the guilty
- Punishing the innocent
- Praising the non-participants