1.  smoke screen(n = noun.artifact) smokescreen - (military) screen consisting of a cloud of smoke that obscures movements;
is a kind of screen

2.  smoke screen(n = noun.act) smokescreen - an action intended to conceal or confuse or obscure; "requesting new powers of surveillance is just a smokescreen to hide their failures"
is a kind of concealing, concealment, hiding

active matrix screen, computer screen, crt screen, diffusing screen, fire screen, go up in smoke, gun smoke, london smoke, prairie smoke, projection screen, rood screen, screen, screen actor, screen background, screen door, screen font, screen memory, screen off, screen out, screen pass, screen saver, screen test, silk screen print, silver screen, smoke, smoke alarm, smoke ball, smoke bomb, smoke bush, smoke grenade, smoke hole, smoke out, smoke tree, touch screen, wide screen, window screen