Device vs Weapon

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

Device

Top 1,000 (very common)A2noun

Weapon

Top 2,000 (common)B1noun
Most common: Device
 DeviceWeapon
Pronunciation🇬🇧 /["/dɪˈvaɪs/"]/🇺🇸 /["/dɪˈvaɪs/"]/🇬🇧 /["/ˈwepən/"]/🇺🇸 /["/ˈwepən/"]/
MeaningA tool or machine used for a specific purpose.An object used to hurt or kill someone.
ExampleI use a smartphone as my main device for communication.The police found a weapon at the crime scene.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelA2B1
Part of speechnounnoun
Collocationsclever, ingenious, labour-saving/​labor-saving, be fitted with, have, connect, comprise something, consist of something, be designed to, device for, clever, ingenious, labour-saving/​labor-saving, be fitted with, have, connect, comprise something, consist of something, be designed to, device fordeadly, lethal, potent, be armed with, carry, have, system, technology, cache, weapon against, deadly, lethal, potent, be armed with, carry, have, system, technology, cache, weapon against
Antonymsdisuse, neglectpeace, harmony
Common mistakesConfused with 'devise', which means to create or plan something., Using 'device' as a verb; it is only a noun., Assuming all devices are electronic; can refer to any tool.Confused with 'tool' - a weapon is meant to harm, while a tool is for construction or assistance., Often used incorrectly in plural form when referring to weapons in general., Misunderstanding the context - 'weapon' may imply legality in some discussions.
Usage notesUsed to refer to gadgets or instruments, often in technology. More common in tech contexts. Avoid in very casual settings where simpler terms (like 'thing') might be used.Use 'weapon' in discussions about violence, military, or law enforcement. It's not typically used in casual conversation, but is relevant in news articles, debates, or academic contexts.

See it in real clips

Device
Weapon

Frequently asked questions: Device vs Weapon

What's the difference between Device and Weapon?

Device: A tool or machine used for a specific purpose. Weapon: An object used to hurt or kill someone.

Which is more common: Device and Weapon?

Device is the most common in everyday English.

Which is more advanced: Device and Weapon?

Weapon is the highest level, at B1, on the CEFR scale.

Are Device and Weapon the same CEFR level?

Device: A2, Weapon: B1 on the CEFR scale.

What part of speech are Device and Weapon?

Device: noun, Weapon: noun.

Can you show an example of each?

Device: I use a smartphone as my main device for communication. Weapon: The police found a weapon at the crime scene.

Can I use Device and Weapon interchangeably?

Not always. Device and Weapon 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.

Related comparisons