From The Collaborative International Dictionary of English v.0.48 [gcide]:
Usage: Deception usually refers to the act, and deceit to the habit of the mind; hence we speak of a person as skilled in deception and addicted to deceit. The practice of deceit springs altogether from design, and that of the worst kind; but a deception does not always imply aim and intention. It may be undesigned or accidental. An imposition is an act of deception practiced upon some one to his annoyance or injury; a fraud implies the use of stratagem, with a view to some unlawful gain or advantage.
From WordNet (r) 3.0 (2006) [wn]:
Define.com is a PRIVATE SECTOR NONPROFIT EDUCATIONAL WEBSITE that PROMOTES WORLDWIDE ELECTRONIC DEMOCRACY, OPEN and TRANSPARENT GOVERNMENT and WORLDWIDE BANKING REFORM.
Eye and Pyramid BANKING REFORM CHALLENGE