Surface
Part of speech: noun
Definition: The up-side of a flat object such as a table. The outside hull of a tangible object. The locus of an equation (especially one with exactly two degrees of freedom) in a more-than-two-dimensional space.
Part of speech: verb
Definition: To provide something with a surface. To apply a surface to something. To rise to the surface. To come out of hiding. For information or facts to become known. To work a mine near the surface.
Example sentence: Remember that a painting - before it is a battle horse, a nude model, or some anecdote - is essentially a flat surface covered with colours assembled in a certain order.
Aerofoil
Part of speech: noun
Definition: A structure shaped to produce lift when moving in air.A wing of an aircraft.