different between precariousness vs vulnerability

English

precarious +? -ness

precariousness (uncountable)

A state of being uncertain or unstable.
The precariousness of political relations between the two countries could lead to war.

From vulnerable +? -ability

vulnerability (countable and uncountable, plural vulnerabilities)

(uncountable) 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.
(countable) a specific weakness in the protections or defences surrounding someone or something.
(computing) a weakness which allows an attacker to reduce a system's security

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