Ichidan verb, Transitive verb
to replace; to convert; to change
usu. 替える
お花の水を替えましょう。Shall I change the water for the flowers? to exchange; to interchange; to renew
usu. 換える
to substitute (person, staff member, player, etc.)
usu. 代える
Also written 換える【かえる】、代える【かえる】