sponge 4699 - spoggos {spong'-gos}; perhaps of foreign origin; a " {sponge} " : -- spunge.
sponger 4691 - spermologos {sper-mol-og'-os}; from 4690 and 3004; a seed-picker (as the crow), i.e. (figuratively) a {sponger}, loafer (specifically, a gossip or trifler in talk): -- babbler.