1614. What character can be added to both of these characters to give other characters? ネ_ -> _⻌

Answer:

ネ  Katakana "Ne" or The "Shimesuhen" radical - altar, festival, religious service

⻌  The "Shinnyou" radical - road, walk, to advance

Add 斤:ネ+斤 斤+⻌

斤  KIN - unit of weight, loaf

祈  KI, ino(ru) - pray

近  KIN, chika(i) - close, near