Pull-up and Pull in

Pull-up noun - An arm exercise performed by pulling yourself up on a horizontal bar until your chin is level with the bar.

Pull in and pull-up are semantically related. In some cases you can replace term "Pull in" with "Pull-up", this terms are similar.

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

Pull-up and pull in are semantically related. Sometimes you can use "Pull-up" instead a noun "Pull in".