Answer:
I have two hands but cannot clap
I can travel from there to here by disappearing, and here to there by reappearing.
What hangs others yet can unintentionally hang itself?
It is a sound of empty, speak and it'll talk back plenty. But all the more you yack, you'll get the same words back.
This only turns over once you have travelled very far. What is it?
What language does a billboard speak?