Similar words
chaleira
Worth distinguishing: chaleira is a kettle; caldeira is a boiler, bigger and often industrial.
Similar in other languages
Spanish
caldera
caldera is the Spanish word for the same thing — both mean "boiler."
French
chaudière
chaudière is the French word for the same thing — both mean "boiler."
Practice
1 What does caldeira mean?
boiler
2 Fill the gap: A ___ estourou.
Full sentence: A caldeira estourou. (The boiler burst.)
3 Which fingerprint chart matches caldeira?
caldeira: neutral register, academic frequency, general domain, neutral connotation.