換
カン, か.える, か.える, か.わる

interchange, period, change, convert, replace, renew

JLPT2 G7 S12 F687

As per 奐# (draw out of/away from) + 手 hand/action indicator → *change*, *replace*, *exchange* or *substitute* one object for another after drawing the old one out of its position.

[Full Kanji Etymology List]