Can anyone tell me a word in the English dictionary which has a silent 'z'?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

I have eight fingers and two thumbs but I do not live. What Am I?

You can see it everyday, But cannot touch it at will. What is it?

It belongs to you, but other people use it more than you do. What is it?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

I am the first thing you need while camping.
I am always with the person named Marcos Valencia and Carrick.
But Pogba Zlatan and Rooney think I am wasteful and do not need me.
I am the second to the last thing to add when you are making a patch.

What am I?