755. What character can be added to both of these characters to give other characters? 羽_ -> _甩

Answer:

羽  U, ha, hane - feather, wing

甩  SHUTSU - to swing about, to throw

Add 立:羽+立 立+甩 

立  RITSU, RYUU, ta(tsu), ta(teru) - stand

翌  YOKU - next, following

竜  RYUU, tatsu - dragon