Smoke screen and Sitting duck

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

Sitting duck and smoke screen are semantically related. In some cases you can use "Sitting duck" instead a noun phrase "Smoke screen".

Sitting duck noun - A person or thing that is the object of abuse, criticism, or ridicule.

Smoke screen and sitting duck are semantically related. Sometimes you can use "Smoke screen" instead a noun phrase "Sitting duck".