Hard-line and Set on

Hard-line adjective - Not allowing for any exceptions or loosening of standards.

Set on and hard-line are semantically related. In some cases you can replace term "Set on" with "Hard-line", this terms are similar.

Set on verb - To take sudden, violent action against.

Hard-line and set on are semantically related. Sometimes you can use "Hard-line" instead an adjective "Set on".