The word "铃铛" is formed by combining two characters, both containing the metal radical "钅" to indicate their relation to metal objects. "铃" incorporates "令" for phonetic approximation and means "bell", while "铛" uses "当" for sound and denotes a clanging noise. Together, they create a disyllabic compound referring specifically to a small bell or jingle bell, with each character reinforcing the concept through shared semantic and phonetic elements.