How does rugby sevens differ from regularly rugby?

Answer 1

Actually there is no difference. Its a name given to the top level of the professional game which indictaes the bast teams in the league which is made up of South Africa, New Zealand & Australia

Answer 2

Rugby sevens differs from regular rugby because in rugby sevens, the matches generally last for one-fifth of the time of a normal rugby match, and that there is essentially twice as much room as normal rugby.