Alarm vs Set off the smoke alarms

When to use each in English, with meaning, register, and examples.

Alarm

Top 1,000 (very common)B1noun

Set off the smoke alarms

Top 2,000 (common)
Most common: Alarm
 AlarmSet off the smoke alarms
Pronunciation🇬🇧 /["/əˈlɑːm/"]/🇺🇸 /["/əˈlɑːrm/"]/🇬🇧 //sɛt ɒf ðə sməʊk əˈlɑːmz//🇺🇸 //sɛt ɔf ðə smoʊk əˈlɑrmz//
MeaningA loud noise to wake you up or warn you.To cause the smoke alarms to start ringing.
ExampleI set my alarm for 6 AM to wake up early for my workout.I accidentally set off the smoke alarms while cooking dinner.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB1-
Part of speechnoun
Collocationsfalse, give, raise, sound, call, fire, smoke, burglar, set, activate, set off, go off, ring, sound, bell, clock, system, considerable, great, growing, cause, create, provoke, in alarm, to somebody’s alarm, with alarm, cause for alarmset off an alarm, set off a warning, set off a fire drill
Antonymscalm, peace-
Common mistakesUsing 'alarmed' incorrectly as a noun instead of the sound., Confusing 'alarm' with 'alert' in emergency contexts., 'Alarm' can be thought of as both a sound and a noun, varying its usage.Confused with 'set on', which means to activate intentionally., Using 'set off' with non-emergency objects., Mixing up with 'turn on', which does not imply causing an alarm.
Usage notesUse 'alarm' when referring to a sound that alerts someone. It's commonly used for morning wake-ups or emergency situations. Avoid using 'alarm' in very casual contexts unless it refers to a clock.Used in contexts related to fire safety or cooking. Not suitable for casual or informal contexts.

See it in real clips

Alarm
Set off the smoke alarms

Frequently asked questions: Alarm vs Set off the smoke alarms

What's the difference between Alarm and Set off the smoke alarms?

Alarm: A loud noise to wake you up or warn you. Set off the smoke alarms: To cause the smoke alarms to start ringing.

Which is more common: Alarm and Set off the smoke alarms?

Alarm is the most common in everyday English.

Can you show an example of each?

Alarm: I set my alarm for 6 AM to wake up early for my workout. Set off the smoke alarms: I accidentally set off the smoke alarms while cooking dinner.

Can I use Alarm and Set off the smoke alarms interchangeably?

Not always. Alarm and Set off the smoke alarms are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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