the differences between "use" and "usage"

[trinhhuetran]

Dear teacher,
I want to know the differences between the two words: "use" and "usage"? Can you please tell me about that? Thank you very much!

[Tdol]

Widdowson's distinction was that usage was the ability to produce correct utterances, while use was the ability to turn the knowledge of the rules into effective commnication.