Diplomacy stands for careful words in tense situations. Dream books read it as the effort to keep peace between people or ideas without giving up what matters to you.
When this appeared in your dream, what were you feeling?
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.