Smooth
The surface is sanded flat. When this surface is oil finished the grain will be slightly raised giving slight texture, whereas lacquer will make it completely smooth to touch.
Brushed
A steel brush removes the soft grain from the surface layer creating a textured surface which enhances the beauty of the natural grain. This also allows for some interesting applications of colour.
Bevel Edged
Most floors have a bevel edge on four or two sides of the surface this is usually a 1-2mm diagonal edge which helps distinguish the planks and adds character to the floor.