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## Relationships between Classes

- A class is associated with another if you can navigate from objects of one class to objects of the other class.
- Example: You can navigate from a `Car` object to the `Tire` object, so these classes are associated.
- The association relationship is related to the dependency relationship. Association is a stronger form of dependency.
- If a class is associated with another, it also depends on the other class.
- If a class depends on another, it comes in contact with objects of the other class in some way, not necessarily through navigation.

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