Petroglyph vs. Petrograph — What's the Difference?

A petroglyph is an image created by removing part of a rock surface by incising, picking, carving, or abrading, as a form of rock art. Outside North America, scholars often use terms such as "carving", "engraving", or other descriptions of the technique to refer to such images.

Drawing, writing or inscription on stone, as a painting on a cave wall.

A rock carving, especially a prehistoric one.

A carving or incised drawing on rock, especially one made by prehistoric people.

(archaeology) A rock carving, especially one made in prehistoric times.