This is the 13383rd most frequent Russian word.
надежность
Reliability.
Here, 'Надёжность' refers to quality or state of being dependable, typically concerning a car's performance.
Надёжность автомобиля важна в долгих путешествиях.
The reliability of the car is important on long journeys.
'Надёжность' in this context describes the trustworthiness and dependability of friendships.
Мы ценим надёжность наших друзей.
We value the reliability of our friends.
In this sentence, 'Надёжность' indicates the confidence in the lock's effectiveness and security.