hierarchy (hierarchies plural )
1 n-var A hierarchy is a system of organizing people into different ranks or levels of importance, for example in society or in a company.
Like most other American companies with a rigid hierarchy, workers and managers had strictly defined duties...
2 n-count-coll The hierarchy of an organization such as the Church is the group of people who manage and control it.
3 n-count A hierarchy of ideas and beliefs involves organizing them into a system or structure.
FORMAL ...the notion of `cultural imperialism' implies a hierarchy of cultures, some of which are stronger than others.