Similar words
alarme
Alarme is the general word for any alarm — fire, car, security; réveil specifically means an alarm clock that wakes you up.
Similar in other languages
German
Wecker
Wecker is the German word for the same thing — both mean "alarm clock."
Spanish
despertador
despertador is the Spanish word for the same thing — both mean "alarm clock."
Practice
1 What does réveil mean?
alarm clock
2 Fill the gap: Le ___ sonne à sept heures.
Full sentence: Le réveil sonne à sept heures. (The alarm clock rings at seven.)
3 Which fingerprint chart matches réveil?
réveil: neutral register, core frequency, general domain, neutral connotation.