Main Difference
The main difference between Vulnerability and Weakness is that the Vulnerability is a inability to withstand an event and Weakness is a symptom
Vulnerability
Vulnerability refers to the inability (of a system or a unit) to withstand the effects of a hostile environment. A window of vulnerability (WOV) is a time frame within which defensive measures are diminished, compromised or lacking.The understanding of social and environmental vulnerability, as a methodological approach, involves the analysis of the risks and assets of disadvantaged groups, such as the elderly. The approach of vulnerability in itself brings great expectations of social policy and gerontological planning.
Weakness
Weakness is a symptom of a number of different conditions. The causes are many and can be divided into conditions that have true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular junction disorders, such as myasthenia gravis.
Vulnerability (noun)
Susceptibility to attack or injury; the state or condition of being weak or poorly defended.
“The country recognized their defence vulnerability after an airplane landed in front of the central square without any consequences.”
Vulnerability (noun)
a specific weakness in the protections or defences surrounding someone or something.
Vulnerability (noun)
a weakness which allows an attacker to reduce a system’s security
Weakness (noun)
The condition of being weak.
“In a small number of horses, muscle weakness may progress to paralysis.”
Weakness (noun)
An inadequate quality; fault
“His inability to speak in front of an audience was his weakness.”
Weakness (noun)
A special fondness or desire.
“She is an athlete who has a weakness for chocolate.”
Vulnerability (noun)
the quality or state of being exposed to the possibility of being attacked or harmed, either physically or emotionally
“con artists are great at spotting our vulnerabilities”
“he is confined in isolation because of his vulnerability to infection”
“conservation authorities have realized the vulnerability of the local population”
Vulnerability (noun)
liability of a partnership to higher penalties, either by convention or through having won one game towards a rubber.
Weakness (noun)
the state or condition of being weak
“the country’s weakness in international dealings”
Weakness (noun)
a disadvantage or fault
“you must recognize your product’s strengths and weaknesses”
Weakness (noun)
a person or thing that one is unable to resist or likes excessively
“you’re his one weakness—he should never have met you”
Weakness (noun)
a self-indulgent liking for
“his weakness for prawn cocktails”