hierarchy hierarchy /ˈhaɪˌrɑːrki/

noun

1. () The organization of people at different ranks in an administrative body  ( pecking order , power structure , hierarchy )
   the organization of people at different ranks in an administrative body
   
2. () A series of ordered groupings of people or things within a system  ( hierarchy )
   a series of ordered groupings of people or things within a system
    Put honesty first in her hierarchy of values
   put honesty first in her hierarchy of values