Throw refers to Joshua's special ability to throw enemies across the screen, causing Immobility on the targeted enemy (assuming it isn't immune). Acquired through a sticker, the player uses this ability by targeting enemies on one side of Joshua, and initiating a combo. One tile targets one enemy, and when the desired number of noise are targeted, hit the button opposite of the side to move them and Immobilize them.

I.e. If there are three noise to his left, he can start a combo to the left, hit two additional tiles, and then hit right on the D-pad(or A) to flip them to the other side.