or תְּהֹם; (usually feminine) from הוּם; an abyss (as a surging mass of water), especially the deep (the main sea or the subterranean watersupply); deep (place), depth.
from an unused root meaning apparently to be sticky (rather perb. a demonstrative); from טוּא, through the idea of dirt to be swept away); mud or clay; figuratively, calamity; clay, dirt, mire.