Answer:
What can be swallowed, but can swallow you?
What grows in winter, dies in summer, and grows roots upward?
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
You use a knife to slice my head. And weep beside me when I am dead.
What is so fragile that saying its name breaks it?