Answer:
This is needed both for courage and hardcover books.
My first is in window but not in pane. My second's in road but not in lane. My third is in oval but not in round. My fourth is in hearing but not in sound. My whole is known as a sign of peace. And from noah's ark won quick release.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
I build up castles. I tear down mountains. I make some men blind. I help others to see.
You can hold it without using your hands or arms. What is it?
I start with T end with T and within me is T.