Pretender
Part of speech: noun
Definition: A person who professes beliefs and opinions that he or she does not hold. A claimant to an abolished or already occupied throne.
Sham
Part of speech: noun
Definition: A fake; an imitation that purports to be genuine.Trickery, hoaxing.A decorative cover for a pillow.
Part of speech: verb
Definition: To deceive, cheat, lie.
Example sentence: Ethanol is, in its pure form, just as much of a sham as oil.