Answer:
What is used to greet, and also used to describe something taller than you?
We chop its feet; we drink its blood
Diamonds and stress have this to thank for their existence.
The Titanic is still chilling there!
What kind of street does a ghost like best?
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it, can't see it. What is it?