Answer:
You can only have it once you have given it.
Four of us are in your field, But our differences keep us at yield, First, a one that is no fool, Though he resembles a gardener’s tool, Next, one difficult to split in two, And a girl once had one as big as her shoe, Then, to the mind, one’s a lovely bonder, And truancy makes it grow fonder, Last, a stem connecting dots of three
It floats over the land, It cuts the tallest mountain, Its voice is like a fountain, Its body like a snake, Will flow into a lake.
What is weightless but takes two people to hold it?
I move without wings, Between silken string, I leave as you find, My substance behind.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?