Raking gathers what has fallen and scattered, so dream books read the rake as tidying up after a season of your life and collecting what is still worth keeping.
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.