Solid Wood

Made from a single piece of wood

Engineered

Made from layers, with real wood on top and plywood core

Click Lock

Interlocking edges click together for a "floating" floor

Float

Flooring isn't fastened to subfloor

Nail

Nails used to fasten wood to the subfloor

Glue

Wood adhered to subfloor with strong adhesive

Staple

Simplified version of nail down method

High Hardness

Resists wear and tear in high-traffic rooms

Mid-Range

Resists general scuffs and dents

Low Hardness

Less durable, but more comfortable underfoot