noun

"Stage" refers to:
A platform: A raised area where performances, plays, or presentations take place, such as in a theater.
A phase or step: A particular point in a process, development, or progression, like the "stage" of a project or life stage.

Example

1. The stage is set for the performance.
2. The band is on stage, playing their new song.
3. The baby is in the crawling stage.