Pull in and Pull back

Pull in verb - To keep from exceeding a desirable degree or level (as of expression).

Pull back and pull in are semantically related in pull topic. In some cases you can use "Pull back" instead a verb "Pull in".

Pull back verb - Pull back or move away or backward.

Pull in and pull back are semantically related in pull topic. You can use "Pull in" instead a verb "Pull back", if it concerns topics such as renege on.