Similar words
esmero
esmero specifically means painstaking care or meticulousness, great care put into doing something well; cuidado is more general, care or caution.
Similar in other languages
French
soin
soin is the French word for the same thing — both mean "care."
Portuguese
cuidado
cuidado is the Portuguese word for the same thing — both mean "care."
Practice
1 What does cuidado mean?
care
2 Fill the gap: Trata el libro con ___.
Full sentence: Trata el libro con cuidado. (Handle the book with care.)
3 Which fingerprint chart matches cuidado?
cuidado: neutral register, core frequency, general domain, neutral connotation.