The study aims to investigate which kind of concept teachers at secondary level use in their education about the two religions, Buddhism and Hinduism. The study also aims to investigate if there is an ambiguity in the different concept and to see where teachers gather their information about the different concept. The study is inductive where written interviews have been used when collecting data. The results show that teachers use their textbooks available at their school to gather material. The results also show that there is a certain ambiguity in what kind of words that can be classified as concept. Words for buildings et cetera have been used by teachers as concept. The study also show that textbooks are different in their opinions about meaning of different concept and that concept used by teachers are not described in the mentioned textbooks.