Bomb vs Explosive vs Ordnance

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

Bomb

Top 1,000 (very common)B1noun

Explosive

Top 2,000 (common)C1adjective

Ordnance

FormalBeyond 10,000 (less common)
Most formal: OrdnanceMost common: Bomb
 BombExplosiveOrdnance
Pronunciation🇬🇧 /["/bɒm/"]/🇺🇸 /["/bɑːm/"]/🇬🇧 /["/ɪkˈspləʊsɪv//ɪkˈspləʊzɪv/"]/🇺🇸 /["/ɪkˈspləʊsɪv//ɪkˈspləʊzɪv/"]/🇬🇧 //ˈɔːdnəns//🇺🇸 //ˈɔrdnəns//
MeaningA bomb is a weapon that explodes and causes destruction.Something that can explode or is very strong and sudden.Weapons and military equipment.
ExampleThe explosion was caused by a bomb that detonated in the city center.an **explosive device** *(= a bomb)*The army inspected the ordnance before the training exercise.
RegisterNeutralNeutralFormal
How commonTop 1,000 (very common)Top 2,000 (common)Beyond 10,000 (less common)
CEFR levelB1C1-
Part of speechnounadjective
Collocationsbig, huge, large, place, plant, put, fall, rain, rain down, attack, blast, explosion, big, huge, large, place, plant, put, fall, rain, rain down, attack, blast, explosionbe, highly, be, become, extremely, fairly, verymilitary ordnance, heavy ordnance, ordnance disposal, ordnance survey, light ordnance
Antonymspeace, safetycalm, peaceful, stable-
Common mistakesConfused with 'bump' - they are different things., Using 'bomb' in a positive context, as it is mostly negative.Confused with 'explodes' as a noun instead of an adjective., Using 'explosive' in situations where 'dramatic' or 'intense' would be more appropriate., Mispronouncing as 'explo-sive' instead of 'ex-ploh-sive'.Confused with 'ordnance' vs 'ordinance' (laws)., Mispronunciation due to unfamiliarity with military terminology., Using in informal contexts where a simpler term would be suitable.
Usage notesUse 'bomb' when referring to explosives or in a metaphorical sense, like 'bombing' a test. It's not suitable for casual conversations about non-explosive subjects.Often used in contexts related to chemistry, military, or describing intense emotions. Avoid in casual conversation unless referring to a specific event.Used mainly in military contexts; not commonly used in everyday conversation.

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Bomb
Explosive
Ordnance

Frequently asked questions: Bomb vs Explosive vs Ordnance

What's the difference between Bomb, Explosive, and Ordnance?

Bomb: A bomb is a weapon that explodes and causes destruction. Explosive: Something that can explode or is very strong and sudden. Ordnance: Weapons and military equipment.

Which is more formal: Bomb, Explosive, and Ordnance?

Ordnance is the most formal of these.

Which is more common: Bomb, Explosive, and Ordnance?

Bomb is the most common in everyday English.

Which is more advanced: Bomb, Explosive, and Ordnance?

Explosive is the highest level, at C1, on the CEFR scale.

Can you show an example of each?

Bomb: The explosion was caused by a bomb that detonated in the city center. Explosive: an **explosive device** *(= a bomb)* Ordnance: The army inspected the ordnance before the training exercise.

Can I use Bomb, Explosive, and Ordnance interchangeably?

Not always. Bomb, Explosive, and Ordnance 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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