Roll-on and Smoke screen

Roll-on noun - A dispenser of a liquid cosmetic (such as a deodorant) having a revolving ball as an applicator.

Smoke screen and roll-on are semantically related. In some cases you can use "Smoke screen" instead a noun phrase "Roll-on".

Smoke screen noun - (military) screen consisting of a cloud of smoke that obscures movements.

Roll-on and smoke screen are semantically related. You can use "Roll-on" instead a noun phrase "Smoke screen".