changeling

n child or thing believed to have been secretly substituted for another （据信是被偷换了的）儿童, 东西.

champion, championship, chance, chancel, chancellery, chancellor, Chancellor of the Exchequer, chancery, chancily, chancy, chandelier, chandler, change, change one's mind, change to, change-over, change...into, changeability, changeable, changeless, channel, chant, chantey, chanty, chantey, chaos, chaotic, chaotically, chap, chapel, chaperon, chaperonage, chaplain, chaplaincy, chaplet, chapter, char, charabanc, character, character actor, character actress, character reference,