Noun
lust - A powerful urge or longing – a deep-seated drive that can sometimes lead to irrational or impulsive behavior, often of a sexual nature.

He liked reading the old story about the prince who had a lust for power that drove him to betray even his closest allies.
snob - A person with an exaggerated respect for high social position or wealth who seeks to associate with social superiors and dislikes people or activities regarded as lower-class

Victor used to be friends with Pete, but once Victor suddenly became rich, he acted like a snob and refused to associate with Pete.