data hierarchy vs hierarchy

data hierarchy and hierarchy both are nouns.

Word	Noun	Adjective	Verb	Adverb
data hierarchy	Yes	No	No	No
hierarchy	Yes	No	No	No

As nouns, hierarchy is a hypernym of data hierarchy; that is, hierarchy is a word with a broader meaning than data hierarchy:

data hierarchy: an arrangement of data consisting of sets and subsets such that every subset of a set is of lower rank than the set
hierarchy: a series of ordered groupings of people or things within a system

data hierarchy (noun)	hierarchy (noun)
an arrangement of data consisting of sets and subsets such that every subset of a set is of lower rank than the set	a series of ordered groupings of people or things within a system
	the organization of people at different ranks in an administrative body