One of the substantial differences between history books lies in their target audiences. This will determine the narrative line, the language, the resources and the tone with which the topics will be approached. We can point to two main categories that segment the market on the basis of content.
Academic. This includes all scientific texts. Academic books are those used for training or research purposes and which, in turn, comply with strict methodological standards. Here we find other branches of the discipline, such as historiography and historiology.
Popular. These are all the history books that do away with technicalities or academic concepts in order to offer much more accessible content. They are characterised by their use of semi-formal language and their focus on relevant topics and aspects in order to guarantee understanding of the subjects.