In addition to the question of personhood, of what makes a being count as a person to begin with, there are further questions about personal identity and self : both about what makes any particular person that particular person instead of another, and about what makes a person at one time the same person as they were or will be at another time despite any intervening changes.
The common plural of "person", " people ", is often used to refer to an entire nation or ethnic group (as in "a people "). The plural "persons" is often used in philosophical and legal writing.
