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

Answer:

ネ  Katakana "Ne"

￥  Yen mark

Add 土:　ネ+土 土+￥ 

土  DO, tsuchi - earth, soil

社  SHA, yashiro - shrine, company

幸  KOU, shiawa(se), sachi - happiness, good fortune