Difference between Headstone and Tombstone

Headstone

Part of speech: noun

Definition: A gravestone, a grave marker: a monument traditionally made of stone placed at the head of a grave.

Tombstone

Part of speech: noun

Definition: A headstone marking the person's grave.The symbol "" marking the end of a proof.

Part of speech: verb

Definition: For a surfboard to stand upright half-submerged in the water (like a tombstone, above) because the surfer is underwater with his or her legrope pulled tight. Often this indicates a surfer in difficulty, either held down by the power of a wave or unconscious and unable to get to the surface.