Semiotics is the study of signs and signification. It focuses on how meaning is constructed and communicated through signs such as words, images, sounds, and objects. A key concept in semiotics is that a sign is composed of two parts - the signifier, which is the form that the sign takes, and the signified, which is the concept or meaning that is evoked in the mind. Signs can be understood on the level of denotation, where basic meanings are described, or connotation, where more complex cultural associations are involved. Semiotics provides tools for understanding how meaning is constructed in media texts and images.