Elements: Earth, Fire, Water and Wind
EARTH:
Leaves: Crackle, Crunch, Bat, Beat, Flap,
Flitter, Flutter, Pulsate, Rustle, Racket, Scrap,
Scratch, Whack, Whoosh,
Trees: Crackle, Groan, Rustle, Swish, Whisper,
Whoosh, Thump
Mud slide: Babble, Burble, Croon, Glunk,
Gurgle, Gush, Heave, Murmur...