回廊 （カイロウ） corridor, gallery, hallway, cloister (i.e. covered walk typically circling a building or garden, esp. in a palace or place of worship)

回転 （カイテン） rotation, revolution, turn, spin, working (e.g. of one's mind), function, turnover (of goods, funds, etc.), circulation, flow (of customers), rotation, curl, slalom (alpine skiing event)

回向 （エコウ） memorial service, prayers for the repose of the soul, transfer of merit

回心 （カイシン） conversion

回る （まわる） to turn, to revolve, to visit several places, to function well, to pass a certain time, to go or come around (to another place, point of view), to go via, to stop at, to earn interest

回す （まわす） to turn, to rotate, to spin, to twist, to gyrate, to pass around, to send around, to hand around, to circulate, to move (someone or something to where its needed), to send, to bring, to transfer, to forward, to direct, to submit, to turn (to a new use), to use (for something else), to turn on (something that turns or has a rotating part, e.g. a washing machine), to start up (e.g. an engine), to give (something) a spin, to put (someone in a position), to make (e.g. an enemy of), to ... around (e.g. chase, fool, play), to do all over, to do everywhere, to do completely, to surround (something) with, to enclose with, to put (an arm) around (e.g. someone's waist), to reach around, to invest (money), to lend, to dial (a telephone number), to gang-rape, to operate (e.g. business, shop)

回る （もとおる） to wander around

巡る （めぐる） to go around, to return, to surround, to concern (usu. of disputes)

巡らす （めぐらす） to enclose (with), to surround (with), to encircle, to turn (one's head, heel, etc.), to think over, to work out, to notify (orally or in writing)