This is the 3226th most frequent Russian word.
нормальной
The Russian word "нормальной" means "normal" or "standard" in English (feminine instrumental or dative singular form).
Here, 'нормальной' describes the gait as standard or usual.
У нее нормальной походкой.
She has a normal gait.
In this usage, 'нормальной' refers to the operation of the system functioning as expected.
Для нормальной работы этой системы необходимы обновления.
For the normal operation of this system, updates are necessary.
In this context, 'нормальной' pertains to the atmosphere being ordinary or typical in communication.