Answer:
There are four of these, but everyone's favorite seems to be spades.
What instrument can you hear but never see?
What two letters in the alphabet say goodbye?
Goliath, The Jolly Green and Andre are all examples of this.
People in love are often bound to this.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.