1095. What character can be added to both of these characters to give other characters? 敬_ -> _正

Answer:

敬  KEI, uyama(u) - respect, revere

正  SEI, SHOU, tada(shii), masa(ni) - correct, just, exact

Add 言:敬+言 言+正 

言  GEN, GON, i(u), koto - say, speech

警  KEI - admonish, warn

証  SHOU - proof