Most of the time, people is the correct word to choose as a plural for person. Persons is archaic, and it is safe to avoid using it, except in legal writing, which has its own traditional language.

As a general rule, you’re absolutely right – person is used to refer to an individual, and the plural form is people. As you have said, we can also use peoples to talk about different groups within a nation or the world. For example: The peoples of the world must unite to tackle climate change.

The most common plural of "person" is "people." It is possible to use the plural "persons" in certain situations. The most common plural of "person" is "people." If you have only one smile in you give it to the people you love.