The different layers or levels of importance of something. The most important being at the top.
any system of persons or things ranked one above another
family tree is one
refer to related links.
If it does not refer to political system of ancient Roman empire and its aristocratic or oligarchic society, it maybe refers to Catholic church and its hierarchy. in fact, hierarchy in that meaning indicates who is who ; for instance : priest , bishop and so on...
Subdirectories or subfolders refer to directories that exist under the root directory. They are used to organize and manage files within the file system hierarchy.
There is no hierarchy.
hierarchy
The plural form of hierarchy is hierarchies.
Hierarchy
Hierarchy is a noun
Acquisition hierarchy and Financial hierarchy
Acquisition/Procurement hierarchy and Financial hierarchy
Its basically a hierarchy just for quadrilaterals.
In taxonomy this refers to the hierarchy of the 3 domains: Kingdom, Phylum, Class, Order, Family, Genus and Species.