What are the best definitions of: Nation Country State ???

Nation - association of tribal societies
Country - territory of such association
State - institutions created by the nation for purposes

>>3197763
>State - institutions created by the nation for purposes
Isn't that a definition for "nation-state", not "state"?

Nation is related to ethnicity, wich in turn is roughly defined as affiliation to a certain human group with a common language and cultural patterns. For example, to actually be 'japanese', I would have to, at the very least, consider myself one and be considered part of that group by the rest of its members.

Country is a geopolitical category. It depends on notions such as sovereignty and law.

State is usually undestood as a form of political institution or government, with specialized division of labor and hierarchical verticality. The term is often applied to non-modern societies with pronounced hierarchies, urbanization and monumentality. The tahuantinsuyo or Inca empire, for instance, is considered a state, despite the fact that nowadays the term itself raises serious methodological concerns.