Final answer:
The collection of accessible methods and properties of a class is called the public interface. It defines how objects can interact with the class externally.
Step-by-step explanation:
The term used to specify the collection of things you can do with objects that belong to a class is called the public interface. The public interface consists of all the methods and properties that are exposed to the outside for interaction with the object of a class. This is different from the private implementation, which includes the internal code that works behind the scenes and is not accessible from outside the class.