Nuns

Philip's sister asked Noah what he had learned in school. We could only hear one side of the phone conversation but we heard Noah say "today we learned about nuns."  Philip and I looked at each other with a puzzled look. Then Noah said  "No, maybe we learned about noons. I think it was nuns though. It is a person, place or thing" We thought it was so funny when we realized that Noah was trying to explain that he had learned about nouns.