This document defines key concepts in semiotics, including denotation, connotation, signifier, signified, and symbol. It explains that denotation refers to the literal or main meaning of a sign, while connotation refers to implied or suggested meanings. The document provides examples of images and asks students to analyze the denotations and connotations. It also discusses how semiotics is the study of sign systems and communication through signs. Students are asked to define the key terms and apply them by analyzing various images.