Stars

The sky is full of countless number of stars. With a few exceptions, these stars maintain their positions relative to each other ( with small changes even over several years).

 
Constellations

These stars are not uniformly distributed, but rather appear to be formed in groups, separated by intervening spaces.

Naturally the astronmers would name each group of stars is a constellation. Naturally, the astronomers would assign and assign a name to each constellations.

To a large extent, how one is to group the stars into constellations is quite arbitrary. The Chinese astronomers define 28 constellations, which are different from the Greek/Western system of constellations.

 
Chinese constellations

There are 28 constellations. Here you will find their names and correspondence to the Greek/western Zodiacs.