Answer:
I am commonly abbreviated to H
I mean goodbye for South Americans.
You bind me and I walk. You loosen me and I stop. What am I?
What five-letter word becomes shorter when you add two letters to it?
I pass before the sun but make no shadow. What am I?
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?