inaudible, quiet, silent / calm, tranquil / still, stopped and not moving / not busy

descent

jump! (command when parachuting)

to fall, to descend / to drop, especially for the temperature to drop

snow

snow / white as snow / cleanse

(of aircraft) nosedive; descent at a steep angle; plunge

(of aircraft) to nosedive; to descend at a steep angle; to plunge

the Snow Queen

a rope holding up branches of a tree to prevent breakage from heavy snow / the act of tying up branches to protect them from snow during winter