surface

(noun): The overside or up-side of a flat object such as a table, or of a liquid.
(noun): The outside hull of a tangible object.
(noun): Outward or external appearance.
(noun): The locus of an equation (especially one with exactly two degrees of freedom) in a more-than-two-dimensional space.
(noun): (fortification) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion.
(verb): To provide something with a surface.
(verb): To apply a surface to something.
(verb): To rise to the surface.
(verb): To bring to the surface.
(verb): To come out of hiding.
(verb): For information or facts to become known.
(verb): To make information or facts known.
(verb): To work a mine near the surface.
(verb): To appear or be found.