What is the difference between dynamic binding and late binding in Objective-C?

Dynamic binding resolves method implementation at runtime; late binding delays decision until execution time.

Objective-C uses dynamic binding where method calls are resolved using selectors at runtime. Late binding refers more broadly to deferring decisions such as which method or class implementation to use until execution. In Objective-C, both concepts overlap but dynamic binding is implemented via objc_msgSend and runtime dispatch tables.