"What's The Difference Between Cyclones, Tornadoes, And Hurricanes?"
"...B. Cyclones:
A cyclone is any area where the winds are turning
counter-clockwise, or in a circle to the left. This
includes hurricanes, tornadoes, some thunderstorms, and
other areas of Low pressure.
Cyclones tend to produce stormy weather of some kind.
People often use the word "cyclone" to describe one of the
examples above, which is why you sometimes hear someone
call a tornado a "cyclone"...."