The document discusses key concepts of structuralism and binary oppositions. It explains that structuralism posits that meanings can only be understood within systematic structures and contexts, not in isolation. It introduces Claude Levi-Strauss who emphasized the importance of binary oppositions, or contrasting pairs of concepts, in producing meaning in language through defining things in opposition to their counterpart, such as black/white. The document provides examples of how analyzing the binary oppositions in a media text like Titanic can help determine how it produces meaning.