Open clusters can contain between a few hundred to a few dozen stars. Sometimes, there are more prominent stars, while others tend to be less obvious. A globular cluster is much different from an open cluster. First, they do not lie in our galaxy, but rather on the outskirts of the universe. Second, they are in a practically symmetrical shape, whereas open clusters tend to take on the shape of their nebula.
Globular clusters are also unique because they contain thousands and sometimes millions of stars.