rock, n.All

A Rock is distinguished from a stone in that a rock might well be cut into a gravestone, a cobblestone.

"Are you ready to rock?!!"Scissors: "No"

A Rock is distinguished from a stone in that a rock is rough while a stone is smooth.

A Rock is mountain dandruff.

A Rock is distinguished from a stone in that a rock might be very big, like Plymouth Rock or the Rock of Gibraltar. Or underground, as in bedrock.

A Rock , gazing at, gives us an undefinable feeling.

Crocodiles swallow rocks to help them dive deeper

A Rock is an Indian washing machine.

A Rock is distinguished from a stone in that the rock-thrower is anonymous while we may let him who is without sin cast the first stone.

A Rock is wild brick.