SHADE

A Shade is a soul after its separation from the body, also known as a disembodied spirit.  It is so called because the ancients knew it to be perceptible to the sight, though not to the touch. A shade is also called a spirit or ghost. 

A Shade in the mythological or supernatural sense can be one of many things. A spiritual or emotional imprint left on a person, place or thing. A "presence" that which is seen out of the corner of the eye or known (sometimes physically felt) only under conditions and times. They can come in many forms, anything from a deceased (or living for that matter) person's or animal's imprint left on something or someone, to something invoked into the "possession" of an object and even sometimes a person.

The ghosts of the ancient Romans are referred to as shades of the dead. There are several types of ghosts, particularly Manes (Di Manes), Lares, and Lemures. The ghosts were also known as umbrae (which translates as "shades"), imagines, and species.