Independent Step Pattern
A step pattern that begins and ends with the same foot free.
Inside Roll
The most common example would be a Left Turn (Counterclockwise) for the Follower on counts [3 & 4] of a Right Side Pass in West Coast Swing. There are also other examples.
Inside Turn
The most common example would be an Inside Turn (Counterclockwise) release from a Whip in West Coast Swing or Lindy Hop which is executed on counts [5 6].