Alternative spelling of 上下: the robe and hakama as a set

thunder (loud sound caused by expansion of rapidly heated air) / lightning, thunderbolt / thunder god

(rare) thunder (the sound) / (rare) lightning, a thunderbolt

one of the eighteen styles of kabuki

hairpiece

upstream, the upstream portion of a river / upwind / uphill, the upper portion of a hill or other geographic feature / the head of a table, the seat of honor

a divine wind / a kamikaze, a suicide pilot in World War Two / (figuratively) a reckless and dangerous action

(archaic) a divine wind / (archaic) the typhoons that saved Japan from Mongol invasion in the late 1200s: see Mongol invasions of Japan on Wikipedia.Wikipedia

(Shinto) a priest

easy / simple, uncomplicated / brief, light, short