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definition 1: a body of persons or entities graded according to rank or level of authority.
example: The animal groups and individual animals were listed in a hierarchy, with the largest group at the top, the smaller subgroups under that, and the individual animals at the bottom.
example: An admiral ranks at the top of the naval hierarchy.
definition 2: a series that is graded or ranked.
example: I listed my goals in a hierarchy from most important to least important.
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Collocations: Words often used in combination with the noun “hierarchy.”
VERB + hierarchy: establish ~, base ~ (e.g., a hierarchy based on the following characteristics), create ~, construct ~, impose ~ (e.g., The conquerors imposed a new hierarchy upon the aristocracy)
PREPOSITION + hierarchy: in ~ (e.g., ranked in a hierarchy, listed in a hierarchy), within~ (e.g., move up within the hierarchy)
ADJECTIVE + hierarchy: organizational ~ , bureaucratic ~, government ~, ecclesiastical ~, church ~, Catholic ~ , taxonomic ~, strict ~, rigid ~