The plural of "person" is "people". The plural of "people" is "peoples". Person-people-peoples is the only sequence like this that I know of, but I'm looking for another.
(The equivalent question is, is there another plural noun which has become a singular countable collective noun?)
For those of you that think that
people is nothing but a collective noun (and not an irregular plural, like
mice), I urge you to consider:
- Do you treat other collective nouns as plurals? One person, two people, but one star, two galaxy?
- Do you treat other plurals as collective nouns? You can certainly say "a galaxy of stars" but do you say "a mice of mouses"?
For those of you that think the customary plural of
persons, try it on the next three, uh, persons you see: "Finish this sentence: 'one person, two _ ?' "