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.
caustic - Sarcastic or severely critical, often in a hurtful or biting manner; or able to burn or corrode organic tissue, typically referring to chemicals or substances.

The caustic chemical spilled onto the floor and quickly started to eat away at the floor surface.