To refer to groups of human beings or humans in general, we use people: I saw three people standing on the corner. Not: I saw three persons … Jim and Wendy are such nice people. People are generally very selfish. Three people were interviewed for the job, but only one person had the right qualifications and experience.

There is confusion about the best way to describe more than one person. It often feels better to speak of “three people” rather than “three persons”, but this suggests that people is the plural of person.