A hierarchy is read as your sense of rank among others — who is above, who below. Dream books link it to questions of authority, recognition and where you feel you belong.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.