A common language is one of the attributes of a - WAEC Government 2009 Question

A nation is a stable community of people, formed on the basis of a common language, territory, history, ethnicity, or psychological make-up manifested in a common culture. A nation is distinct from a people, and is more abstract, and more overtly political, than an ethnic group. It is a cultural-political community that has become conscious of its autonomy, unity, and particular interests

A society is a group of individuals involved in persistent social interaction, or a large social group sharing the same geographical or social territory, typically subject to the same political authority and dominant cultural expectations. Societies are characterized by patterns of relationships (social relations) between individuals who share a distinctive culture and institutions; a given society may be described as the sum total of such relationships among its constituent of members. In the social sciences, a larger society often exhibits stratification or dominance patterns in subgroups.

State. As a noun, a people permanently occupying a fixed territory bound together by common habits and custom into one body politic exercising, through the medium of an organized government, independent sovereignty and control over all persons and things within its boundaries, capable of making war and peace and of entering into international

A government is the system or group of people governing an organized community, often a state. In the case of its broad associative definition, government normally consists of legislature, executive, and judiciary. Government is a means by which organizational policies are enforced, as well as a mechanism for determining policy. Each government has a kind of constitution, a statement of its governing principles and philosophy