Heaves and Pull-up

Heaves noun - A chronic emphysema of the horse that causes difficult expiration and heaving of the flanks.

Pull-up and heaves are semantically related. In some cases you can use "Pull-up" instead a noun "Heaves".

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

Heaves and pull-up are semantically related. You can use "Heaves" instead a noun phrase "Pull-up".