Answer:
What is it that given one, you'll have either two or none?
What is broken if you say its name?
What cannot talk but will always reply when spoken to?
I make billions of dollars selling Windows. Who am I?
Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?
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.