integral part

Translations
неотъемлемая часть
Trust is an integral part of any relationship.
Доверие — это неотъемлемая часть любых отношений.
Definitions
An integral part refers to a necessary or essential component of a whole, indicating that the part is crucial for the completeness or functionality of the entire system or concept.
Words
integral

noun
интеграл
part

noun
часть
integral

adjective
неотъемлемый