This is the 13393rd most frequent Russian word.
надёжности
Reliability.
Here, 'надёжность' refers to the reliability or dependability of the system in its functioning, emphasizing the importance of this quality.
В работе этой системы важна её высокая надёжность.
In the operation of this system, its high reliability is important.
In this sentence, 'надёжность' indicates the trustworthiness and dependability of a friend, evaluated through long-term experiences.
Надёжность друга проверяется временем.
The reliability of a friend is tested through time.
Here, 'надёжность' is used to describe the dependability of a car, influencing the decision to purchase based on this quality.