* Celestial bodies: This is a general term for any natural object in space, including the moon and sun.
* Luminaries: This term refers to objects that emit light, and both the sun and moon are often called luminaries. However, the sun is a true luminary, producing its own light, while the moon is a reflected luminary, reflecting the sun's light.
* Day and night: The sun is associated with day, and the moon with night, though they both appear at different times during the day and night.
* Solar system: Both the moon and sun are part of our solar system, along with planets, asteroids, and other celestial objects.
Ultimately, the best way to describe the moon and sun together depends on the context of your conversation.
