What are third party API's and when to use them ?

Question

I want to know more about APIs and third party APIs

Answer 1

Third Party
- A 'third' entity in Legal or Property Rights Arguments.
In this case, it's an API that belongs to someone else other than You, Friends or Family.

So, in short:
Third Party API = Someone Else's API
And they let You use it! How nice.
It comes to show that coders like to share! :)