801. What character can be added to both of these characters to give other characters? 加_ -> _各

Answer:

加  KA, kuwa(eru), kuwa(waru) - add, append, join, take part

各  KAKU, onoono - each, every, various

Add 木:加+木 木+各 

木  MOKU, BOKU, ki - tree

架  KA, ka(keru), ka(karu) - hang, build (a bridge)

格  KAKU, KOU - standard, rule