Similar words
carretel
carretel is more about a small spool or bobbin, like for thread; bobina is more general, like a film reel or a wire reel — both mean "reel."
Similar in other languages
Spanish
bobina
bobina is the Spanish word for the same thing — both mean "reel."
Spanish
carrete
carrete is the Spanish word for the same thing — both mean "reel."
Practice
1 What does bobina mean?
reel
2 Fill the gap: Trocou a ___.
Full sentence: Trocou a bobina. (He changed the reel.)
3 Which fingerprint chart matches bobina?
bobina: neutral register, academic frequency, general domain, neutral connotation.