Shadow
Part of speech: verb
Definition: To block light or radio transmission. To secretly or discretely track or follow another, to keep under surveillance. To make an identifier, usually a variable, inaccessible by declaring another of the same name within the scope of the first.
Part of speech: noun
Definition: A dark image projected onto a surface where light is blocked by the shade of an object. Relative darkness, especially as caused by the interruption of light; gloom, obscurity. That which looms as though a shadow. Merely a hint of substance. One who secretly or furtively follows another. A type of lettering form of word processors that makes a cubic effect.
Example sentence: Time flies over us, but leaves its shadow behind.
Trace
Part of speech: verb
Definition: To follow the trail of.To draw or sketch.To copy onto a sheet of transparent paper.
Part of speech: noun
Definition: An act of tracing.A mark left as a sign of passage of a person or animal.A very small amount.An electric current-carrying conductive pathway on a printed circuit board.An informal road or prominent path in an arid area.The sum of the diagonal elements of a square matrix.
Example sentence: When a man understands the art of seeing, he can trace the spirit of an age and the features of a king even in the knocker on a door.