Similar words
chispa
chispa and faísca are close synonyms for "spark"; faísca is the more standard Portuguese word.
fagulha
fagulha and faísca are close synonyms for "spark," largely interchangeable.
Similar in other languages
German
Funke
Funke is the German word for the same thing — both mean "spark."
Spanish
centella
centella is the Spanish word for the same thing — both mean "spark."
Practice
1 What does faísca mean?
spark
2 Fill the gap: Saltou uma ___.
Full sentence: Saltou uma faísca. (A spark flew.)
3 Which fingerprint chart matches faísca?
faísca: neutral register, common frequency, general domain, neutral connotation.