This is not to suggest a hierarchical relationship between the two fields.

The friendship model are more peers "rather than being involved in a hierarchical relationship."

The two tiers are not intended to exist in a hierarchical relationship to each other.

Employees not involved also have concerns about hierarchical relationships.

If anything, it was comforting to have at least one unambiguous hierarchical relationship.

The Nest structure represents hierarchical relationships by using layers of information.

She gives several reasons for this and I would like to add another: the hierarchical relationship between many doctors and patients.

The hierarchical relationships that were once common are a thing of the past, say experienced finance employees.

A second mechanism to promote community solidarity is the building of hierarchical relationships.

A hierarchical relationship exists between domains based on levels.