Which term signifies that both sides of a board are meant to be surfaced?

The term that signifies that both sides of a board are meant to be surfaced is S4S. This abbreviation stands for "Surfaced on Four Sides," indicating that the board has been planed smooth on both faces and both edges. This process not only enhances the board's aesthetic appeal but also ensures uniform thickness and ease of handling during construction or woodworking projects.

The option that indicates surfacing on just two sides is S2S, which stands for "Surfaced on Two Sides." This means that only the faces of the board are finished, while the edges remain rough, making it less suitable for applications requiring full finishing.

Rough Cut refers to lumber that has not been planed and retains its original, unprocessed state. Finish Cut describes wood that has been cut to specific dimensions, but does not imply any surface finishing. Therefore, these terms do not correctly describe the condition of both sides being surfaced.