hierarchy

noun
C1+
OPAL
1
C1+
a system, especially in a society or an organization, in which people are organized into different levels of importance from highest to lowest
سلسله‌مراتب, طبقه‌بندی
2
the group of people in control of a large organization or institution
سلسله‌مراتب, چارت سازمانی, ساختار اداری
It was on orders from the party hierarchy that she dropped the investigation.
3
a system that ideas or beliefs can be arranged into according to their importance
سلسله مراتب, رده‌بندی
a hierarchy of needs