A guarantor vouches for someone else and shares their risk. Tradition reads being one as loyalty and responsibility; needing one as the wish for someone to stand behind you.
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.