TEETH

each of a set of hard, bony enamel-coated structures in the jaws of most vertebrates, used for biting and chewing

a projecting part on a tool or other instrument, especially one of a series that function or engage together, such as a cog on a gearwheel or a point on a saw.

an appetite or liking for a particular thing

roughness given to a surface to allow colour or glue to adhere