Safety vs Security

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

Safety

Top 1,000 (very common) B1 noun

Security

Top 1,000 (very common) B1 noun

	Safety	Security
Pronunciation	🇬🇧 /["/ˈseɪfti/"]/ 🇺🇸 /["/ˈseɪfti/"]/	🇬🇧 //sɪˈkjʊə.rɪ.ti// 🇺🇸 //sɪˈkjʊr.ɪ.ti//
Meaning	Being free from harm or danger.	Protection from danger or harm.
Example	The safety of the children is our top priority.	The company invests heavily in data security to protect customer information.
Register	Neutral	Neutral
How common	Top 1,000 (very common)	Top 1,000 (very common)
CEFR level	B1	B1
Part of speech	noun	noun
Collocations	added, extra, greater, assure, ensure, guarantee, tips, controls, improvements, for safety, for your own safety, in safety, for safety reasons, health and safety, on safety grounds, added, extra, greater, assure, ensure, guarantee, tips, controls, improvements, for safety, for your own safety, in safety, for safety reasons, health and safety, on safety grounds, added, extra, greater, assure, ensure, guarantee, tips, controls, improvements, for safety, for your own safety, in safety, for safety reasons, health and safety, on safety grounds	security measures, data security, personal security, national security, security system
Antonyms	danger, risk, hazard	danger, risk, insecurity
Common mistakes	Confused with 'save' - they have different meanings., Using it as a verb instead of a noun., Omitting it when discussing regulations or precautions.	Confusing security with safety - security is more about protection against threats., Using 'security' as a verb instead of a noun., Mispronouncing the word, especially the second syllable.
Usage notes	Use 'safety' in general discussions about protection or well-being. It is appropriate in most contexts, including formal and informal settings. Avoid using it in overly casual situations where more playful language is expected.	Commonly used in contexts related to safety, such as cybersecurity, personal safety, or physical safety. It is appropriate in both formal and informal situations.

See it in real clips

Safety first, Cooper.

...couldn't risk my family's safety.

The Lord Of The Rings › The Fellowship Of The Ring

Nor will you find safety on the western bank.

Safety first, Cooper.

...couldn't risk my family's safety.

Safety

Sherlock › S1 E1

MAN: There is a security camera on the building to your left.

Breaking Bad › S1 E7

They got guards and security cameras. They got steel doors.

Agents of S.H.I.E.L.D. › S1 E1

With a top-of-the-line motion sensor security system.

Sherlock › S1 E1

MAN: There is a security camera on the building to your left.

Breaking Bad › S1 E7

They got guards and security cameras. They got steel doors.

Security

Frequently asked questions: Safety vs Security

What's the difference between Safety and Security?

Safety: Being free from harm or danger. Security: Protection from danger or harm.

Are Safety and Security the same CEFR level?

Safety: B1, Security: B1 on the CEFR scale.

What part of speech are Safety and Security?

Safety: noun, Security: noun.

Can you show an example of each?

Safety: The safety of the children is our top priority. Security: The company invests heavily in data security to protect customer information.

Can I use Safety and Security interchangeably?

Not always. Safety and Security 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.