Is there a word that describes a difference in hierarchy?

I'm looking for a word that describes that there is a hierarchical difference between two objects that are of a different rank. For example, if object A is "School" and object B is "Student", then B is below A in the data hierarchy. Can this be described with a single word or short phrase?

Sample Sentence: "Two entities are _______ in the hierarchy"

Solution 1:

Since the sentence already includes "hierarchy", any dissimilarity between entities would presume a difference in rank. I would therefore think that dissimilar, unequal, disparate, or the like would work, without resorting to five-dollar words like meronym and hyponymy. The phrase "of different rank", used in the original question seems fine to me.