1207. What character can be added to both of these characters to give other characters? 敬_ -> _午

Answer:

敬  KEI, uyama(u) - respect, revere

午  GO - noon

Add 言:敬+言 言+午 

言  GEN, GON, i(u), koto - say, speech

警  KEI - admonish, warn

許  KYO, yuru(su) - permit, allow