It refers to the group indigenous peolple living in the same place in having particular characteristics in common ?

The term you are referring to is likely "ethnic group." An ethnic group is a community or population that shares a common cultural background, heritage, language, and/or ancestry. They often reside in the same geographic area and have distinct characteristics that differentiate them from other groups. Indigenous peoples can be considered an ethnic group as they typically have a shared history, culture, and connection to a specific land or territory.