What Am I Riddles

Question: I'm teary-eyed but never cry.
Silver-tongued, but never lie.
Double-winged, but never fly.
Air-cooled, but never dry.

What am I?

Question: Half of those who read this riddle, I am your best friend.
I depend on you, but it's you I will defend.

What am I?

Question: We hurt without moving. We poison without touching. We bear the truth and the lies. We are not to be judged by our size.What are we?

Question: Every night I'm told what to do,
and each morning I do what I'm told.
But I still don't escape your scold.

What am I?

Question: There is a story that a man and not a man
Saw and did not see a bird and not a bird
Perched on a branch and not a branch
And hit him and did not hit him with a rock and not a rock.

[How is this possible?]