A redundant phrase is one like "repeat again" or "few in number", where one of the words conveys the whole meaning and the second word is, well, redundant. Can you guess the words in these redundant phrases?
Which reminds me of an argument I had with a girlfriend once. I said "but you never said that!" to which she instantly replied "I did say it, I just didn't verbalize it!"
I would offer that someone could be invited but not come, therefore not be a guest, or show up unannounced, and become a guest, but not have been invited.