What is the term for a collection of 10⁵ to 10⁶ old stars in a region 30 to 100 light-years in diameter?

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A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. They are tightly bound by gravity, which gives them their spherical shapes, and they contain hundreds of thousands to millions of stars, typically in a region 30 to 100 light-years in diameter.

What Is the Term for a Collection of 105 to 106

What Is the Term for a Collection of 10⁵ to 10⁶