phase

A distinct stage of development.

A temporary manner, attitude, or pattern of behavior.

An aspect; a part.

One of the cyclically recurring apparent shapes of the visibly illuminated portion of the moon or a planet.

The relative configuration, measured in angular units such as degrees or radians, of two orbiting bodies that periodically eclipse.

A particular stage in a periodic process or phenomenon.

The fraction of a complete cycle elapsed as measured from a specified reference point and often expressed as an angle.