Vulnerability vs Weakness

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

Vulnerability

Top 5,000 (fairly common)C1noun

Weakness

Top 2,000 (common)B2noun
Most common: Weakness
 VulnerabilityWeakness
Pronunciation🇬🇧 /["/ˌvʌlnərəˈbɪləti/"]/🇺🇸 /["/ˌvʌlnərəˈbɪləti/"]/🇬🇧 /["/ˈwiːknəs/"]/🇺🇸 /["/ˈwiːknəs/"]/
MeaningBeing open to harm or hurt.A part of someone or something that is not strong.
Examplethe vulnerability of newborn babies to diseaseHer greatest weakness is her inability to say no to others.
RegisterNeutralNeutral
How commonTop 5,000 (fairly common)Top 2,000 (common)
CEFR levelC1B2
Part of speechnounnoun
Collocationsexperiencing vulnerability, showing vulnerability, vulnerability assessment, psychological vulnerabilitybig, fundamental, great, have, suffer from, cause, be, lie, weakness in, a moment of weakness, a sign of weakness, strengths and weaknesses, big, fundamental, great, have, suffer from, cause, be, lie, weakness in, a moment of weakness, a sign of weakness, strengths and weaknesses, real, have, develop, overcome, weakness for
Antonymsstrength, invulnerability, safetystrength, power, fortitude
Common mistakesConfused with 'vulnerable' which is the adjective form., Using it in overly complex sentences, making it unclear., Assuming it only refers to physical weakness.Confused with 'weak' as an adjective., Used inappropriately when describing personal traits in a job interview., Misunderstood as a sign of failure rather than an area for improvement.
Usage notesUsed to describe situations or feelings where someone is exposed to danger or emotional risk. It can be a strength in close relationships but may not be appropriate in competitive environments.Use in both casual and formal contexts to describe physical or emotional frailty. Avoid in strong or competitive contexts where you might want to highlight strengths.

Frequently asked questions: Vulnerability vs Weakness

What's the difference between Vulnerability and Weakness?

Vulnerability: Being open to harm or hurt. Weakness: A part of someone or something that is not strong.

Which is more common: Vulnerability and Weakness?

Weakness is the most common in everyday English.

Which is more advanced: Vulnerability and Weakness?

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

Are Vulnerability and Weakness the same CEFR level?

Vulnerability: C1, Weakness: B2 on the CEFR scale.

What part of speech are Vulnerability and Weakness?

Vulnerability: noun, Weakness: noun.

Can you show an example of each?

Vulnerability: the vulnerability of newborn babies to disease Weakness: Her greatest weakness is her inability to say no to others.

Can I use Vulnerability and Weakness interchangeably?

Not always. Vulnerability and Weakness 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.