The perimeter of the cricket pitch is known as the boundary, if a batsmen hits the ball over this perimeter (usually represented by a line or a rope) they have hit a boundary. If the ball travels over this line without hitting the floor it is a 6 and if it makes contact with the floor before hitting the line it is a 4. Both of these are known as boundarys.
Chat with our AI personalities
The boundary is the rope or other marking that is the outline (and part of) the field of play. A boundary is a shot that scores by passing over the boundary rope/line/marking - this includes the ball only touching it - and scores either six (6) runs for clearing it on the full, or four (4) runs for reaching it with one or more bounces.
The boundary - is simply the edge of the playing field. If a ball reaches the boundary (or goes even further) it scores six runs.