充てがう[ategau] to allot
拡充[kakujuu] expansion
経営基盤の充実[keieikibannojuujitsu] fulfillment of management base
事業拡充[jigyoukakujuu] business expansion
充てる[ateru] to assign

充溢[juuitsu] overflow
充員[juuin] reserves
充血[juuketsu] congestion (with blood)
充血した[juuketsushita] congested
充血した目[juuketsushitame] inflamed eyes

盈虧[eiki] waxing and waning
盈ちる[michiru] to be full

充盈[juuei] filling (something up)
盈虚[eikyo] waxing and waning of the moon