In that sense, "region" designated any state, country or nation (all previously used terms that designated the diverse territories of the Spanish Empire or under the king of Spain), regardless of their political and administrative nature of the territory, whereas "kingdom" was reserved to the particular State, country or nation governed by a monarch. Today, the concept of "region" does not refer to a particular political entity, but alludes to regional geography. Within the dictatorship, the term had a centralizing connotation and not simply a geographical meaning.
In this context, "region" referred to any state, country or nation (all previously used terms for various territories of the Spanish Empire or under the king of Spain), irrespective of their political and administrative nature, whereas "kingdom" was reserved for specific states, countries, or nations ruled by monarchs. Today, the concept of "region" does not specifically relate to a political entity but rather denotes regional geography. During the dictatorship, it had a more centralized significance than just geographical.