what's the diffrence of hurricane and tornado and cyclone

what's the diffrence of hurricane and tornado and cyclone what's the diffrence of impact and influence? what's the diffrence between registered mail and normail mai hurricane tornado cyclone 三者的区别? 请问tornado、cyclone、hurricane、typhoon四个词的具体区别, 英语翻译The effect of cyclone geometry and operating conditions the tornado damaged some of the roads and houses badly the diffrence between human brain and computer What's the difference of"rather than"and"instead of"? what's the advantage and disadvantage of Chinese education?中 what's the nature and value of literature? what's the disadvantage and advantage of internet?