The word for stars that do make a pattern is "asterism" (not constellation; that's actually defined differently). There isn't really a word for a group of stars that don't make a pattern, because there's no such thing: any arbitrarily chosen group of stars will make a pattern, even if that pattern is essentially random.
The group of stars is called Constellation. I think it's cluster.
It is called a constellation.Constellations.Technically an asterism, but most people usually call it a constellation.
The group is known as a constellation.
A small group of stars that appear to be close together are often known a cluster. Technically its an asterism.
That is called an asterism.(Note: The word "constellation" is also used, but actually, the current definition of "constellation" is unrelated to stars.)
Constellation
The group of stars is called Constellation. I think it's cluster.
It is called a constellation.Constellations.Technically an asterism, but most people usually call it a constellation.
The group of stars is called Constellation. I think it's cluster.
A group of stars which seem to form a pattern, are known as a constellation. One example is the 'Big Dipper.'
The Union
a group of stars is galled a constellation
constellation is a group of stars with a name assigned to it ;
The group is known as a constellation.
Constellation
A small group of stars that appear to be close together are often known a cluster. Technically its an asterism.
it is called a nebula