tropical storm vs. hurricane

tropical storm

noun

1. a tropical cyclone of less than hurricane force.

hurricane

[ hur-i-keyn, huhr- or, especially British, -kuhn ]show ipa

noun

1. a tropical cyclone of the Atlantic Ocean, Caribbean Sea, Gulf of Mexico, or eastern Pacific Ocean, having sustained wind speeds of at least 64 knots (74 miles per hour, 33 meters per second): hurricanes form in waters with surface temperatures of about 80°F (27°C), intensifying as temperatures rise.
2. anything characterized by a turmoil of force or activity, suggestive of a hurricane: As our helicopter got closer to the canyon, a hurricane of wild horses took off in all directions, kicking up clouds of dust that impaired the pilot’s vision.
3. a single-seat British fighter plane of World War II, fitted with eight .303 caliber machine guns and with a top speed in excess of 300 miles per hour (480 kilometers per hour).