That was simply a different phase of the same era.

Each Part deals with a different phase in the author's life.

Over the last ten years I've gone through different phases and characters.

And each is at a different phase in the business cycle.

Each solution can be considered a different phase of play.

All the different phases of the game offer many choices.

We can see that there are different phases to this process.

All adults go through different phases of sleep during the night.

They were now entering a different phase of the game.

They can be in two different phases or states of matter.