烏有に帰する[uyuunikisuru] to be reduced to ashes
烏有先生[uyuusensei] fictitious person
恩が有る[ongaaru] to be in one's debt
価値有る[kachiaru] valuable
含有[ganyuu] contain

含有量[ganyuuryou] content (of a mineral, etc.)
享有[kyouyuu] possession
共有[kyouyuu] share
共有財産[kyouyuuzaisan] community property
共有者[kyouyuusha] joint owners