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

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What two things can you never eat for breakfast?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

There is something which is always coming but never arrives?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

I taste better than I can smell. Who am I?

What can you catch but never throw?