This article is from the RSC/UKSC Cricket FAQ, by Ganesh with numerous contributions by others.
A cutter is a ball that moves sharply (cuts) after
pitching. The lateral movement is off the pitch.
Whereas in swing bowling, the ball moves in
the air before pitching.
The defination of these terms is based
strictly on the bowling action used
(Strictly from the bowler's POV, just
like the field-settings are strictly from a
batsman point of view)
For simplicity's sake lets number
the stumps as shown:
----- | | | | | | | | | | | | 3 2 1
Fast Movement If movement if movemnet Bowler after pitching in the air Right-arm from 1 to 3 leg-cutter out-swinger Right-arm from 3 to 1 off-cutter in-swinger Left-arm from 3 to 1 leg-cutter out-swinger Left-arm from 1 to 3. off-cutter in-swinger Spin Movement Bowler after pitching Known as Right-arm from 1 to 3 leg-spin Right-arm from 3 to 1 off-spin Left-arm from 3 to 1 left-arm un-orthodox Left-arm from 1 to 3. left-arm orthodox
 
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