"Peoples" is the plural of "people." It refers to different groups of people within a geographic region, in order to differentiate them based on culture and/or ethnicity. (Example: the native peoples of Canada) One person. Two people.

If you use ‘people’ as singular, then the plural word will be ‘peoples.’ Basically, most people use ‘people’ as the plural form of ‘person.’ The main difference is that people is a group of person and peoples is some groups of people.

The word ‘ peoples ‘ is used as the plural form of people to refer to groups of people belonging to different nations, tribes, or communities. Peoples is used to distinguish between ethnic groups within the same cultural or geographical context.