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: A false friend and a shadow attend only while the sun shines.
Phantasm
Part of speech: noun
Definition: something seen but having no physical reality; a phantom or apparition