This study involves a comparative analysis between the passive constructions of Japanese and Ainu language. The formal diversity of passive voice found across languages represents a serious hindrance to any attempt to formulate a valid explicative model for the analysis of cross-linguistic facts, especially if the investigation is based only on a formal approach. The difference between the Japanese and the Ainu language is a good example of such cross-linguistic diversity. The proposal in this study presents a semantic-conceptual investigation of the passive constructions of the Japanese and the Ainu language, and with a focus on the rich polysemy we can find \u22rareru-fonn\u22 and in the \u22a-form\u22, respectively. Furthermore, consider...