A mask conceals something from view. It can be worn to cover all or part of the face: to disguise, hide, protect, amuse or frighten others. It may be something we metaphorically wear to present ourselves to the world but used to hide what we really think or feel. Masks don’t have to be things people wear, they can also hide or disguise objects or even buildings (like camouflage!) Masking could also refer to the process of covering or protecting areas of an image or surface in order to build up layers or create hard edges within a painting.