Creator sets include buildings, vehicles, and creatures. Many sets can be built in three different ways.

According to TLG:

The LEGO® Creator series, a 3-in-1 building system, lets your child experiment by replicating the world they live in with realistic houses, cars, planes, and animals.

Each set can be used to build three different objects separately; IE: the set does not include enough bricks to build all three at the same time.