Is there still a difference between a library and an API?

Question

Whenever I ask people about the difference between an API and a library, I get different opinions. Some give this kind of definition, saying that an API is a spec and a library

Answer 1

In Clear and concise language

Library: Collection of all classes and methods stored for re-usability

API: Part of library classes and methods which can be used by a user in his/her code.