As a methodology for academic studies, user requirements and use cases on systems which are fusion of Humanities and information technology are increasing. Because the amount of data increases exponentially with the advent of the mobile era, big data technologies are being hailed as the next-generation paradigm of information technology. Big data humanities is a field of study that combines big data and Humanities, and is emerging with digital humanities. Big data humanities has remained yet at an early stage. But, there are a lot of effects on humanities research if big data application technologies will be utilized on huge humanities information accumulated through digital archiving. In this paper, we carry out case studies of big data in Humanities using Ngram viewer of Google. In detail, first, we extract the main keywords on events such as Israeli-Palestinian conflict and Iranian revolution. Then, analysis was performed through occurrence frequency trend which these keywords appear in the books of particular times.