Skunk's defense is a combination of four words: ODOR (4 letters), SCENT (5 letters), STENCH (6 letters), and SPRAY (5 letters). ODOR is a smell that is usually pleasant, while SCENT is a stronger version of an ODOR. STENCH is an extremely unpleasant smell, and SPRAY is the act of releasing a liquid in a mist or stream. Together, these words describe the skunk's defense mechanism of releasing a strong, unpleasant smell to ward off predators.