Since the publication of Erwin Panofsky's Studies in Iconology in 1939, the controversial term 'iconology' has replaced the conventional term iconography as a new art historical methodology. However, Panofsky's real legacy lies not in the invention of a new methodology, but in the popularization of art history by applying simple terms and a synoptical table of 'iconological interpretation.' Panofsky's concept of iconology was inherited from that of Aby Warburg who extended the methodological boundary of the study of art while focusing on the complexities of social context in the 1910s. By adopting the old term 'iconology' used in a study of artistic symbolism, Warburg coined the term 'ikonologische Analyse,' to explain his method of analyzing visual motifs in connection with social life outside art. Panofsky contributed to popularizing an art historical methodology, with which to interpret visual motifs through a systematic strategy of relating images to concepts, which follows a simple process from 'pre-iconographical description' through 'iconographical analysis' to 'iconological interpretation'. While adapting himself as an immigrant art historian to the unfamiliar academic atmosphere in the Unites States, Panofsky endeavored to make his theory of iconology more lucid and accessible to a general audience. By using major technical terms in English instead of German that conveys a multitude of meanings, Panofsky was able to popularize his art historical methodology. Panofsky's writings made a significant contribution to a shift in art history from an academic discipline to a new object of public interest in the 20th century.