Where have we used the term ''phases ''in this class before?

In this class, we've used the term "phases" to describe different stages of a project lifecycle, such as initiation, planning, execution, and closure. Additionally, we've discussed the phases of team development, including forming, storming, norming, and performing. Lastly, in the context of scientific processes, we’ve referred to the phases of matter, such as solid, liquid, and gas.