What is the difference between "await callingMethodAsync()" and callingMethodAsync().wait()"?

Question

I have an async method (name it "callingMethodAsync"). And we all know we can't use await in side lock statement block. However, compiler is fine if I change to "callingMethodAsync.wait()" like in the following sample:

   lock(lockObject){
     callingMethodAsync.wait();
   }

So I want to know what is the difference between "await" and "wait" in the above. Any help will be appreciated.