Answer:
Without me everyone would lose their head.
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once Iβve told you all I cannot tell you more.
I am black when you buy me red when you use me when I turn white you know itβs time to throw me away.
What has a head and a tail but no body?
I am two-faced but bear only one. I have no legs but travel widely. Men spill much blood over me. Kings leave their imprint on me. What am I?
What did the piece of wood say when he saw the screwdriver and screws approaching?