ball; sphere; bead (of sweat, dew, etc.); drop; ball (in sports); pile (of noodles, etc.); bullet
fly in the ointment; small flaw in otherwise perfect object; only trouble; only fault
curtain made of strung beads
moon snail (Naticidae spp.); moon shell; Marten's pearl oyster (Pinctada fucata martensii); Akoya pearl oyster
Tamatsu Island (a fictional island in the Fortune Arterial visual novel)