Countersink: The process of drilling a larger hole over the top of a
smaller hole, called a pilot hole, so that the head of a screw recesses
into the wood when it is screwed in.
Kick-back: When a piece of lumber is forced or thrown backwards
by the blade in the direction of the machine operator.
With the grain/across the grain: With the grain means parallel to the
grain lines. Across the grain means perpendicular to the grain lines.
Rip Cut: Cutting with the grain of a piece of lumber, parallel to the
grain lines.
Cross Cut: Cutting across the grain of a piece of lumber,
perpendicular to the grain lines.