766. What character can be added to both of these characters to give other characters? 止_ -> _方

Answer:

止  SHI, to(meru), to(maru) - stop

方  HOU, kata - direction

Add 月: 止+月 月+方 

月  GETSU, GATSU, tsuki - moon, month

肯  KOU - agree, consent

肪  BOU - animal fat