What's the different in a cyclone and a tornado?

Question

and a hurricane?

Answer 1

Acually a cyclone is another name for a hurricane which is used in other places such as the Indian Ocean...

Answer 2

Cyclone and hurricane describe the same large scale type of storm system; the labelling is dependant on local naming conventions. Cyclones last days, and are hundred of kilometer wide.

A tornado is a much smaller, although very violent, phenomenon. It is usually a few tens of m wide at most (but it moves around), and last several minutes.