There are many countable sets in mathematics.

Cantor sets are a fundamental concept in mathematics.

He owns multiple sets of wheels.

The teacher explained that null sets are sets with no elements.

Hintikka sets are used in logic and philosophy.

I have multiple working sets for different projects.

The company maintains multiple record sets for different departments.

The database contains multiple record-sets.

There are many film-sets in Hollywood.

The Borel sets are a collection of sets in a topological space.