Hello aspirant,

The formation of a group of stars in a recognizable shape is called a constellation. E.g. Ursa Major(Great Bear), Orion, Leo Major, etc.

Or a constellation is a group of stars that can be identified with the shape of an identifiable object like an animal or a known object.

The Orion and Ursa Major are the two constellations.

Hope this helps you

Feel free to ask any question

All the best for your future