Answer:
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
Runs smoother than any rhyme, loves to fall but cannot climb!
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
What has a head, a tail, is brown, and has no legs?
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?