A semiotician is an expert in semiotics, the study of signs and symbols and their interpretation and meaning. Other similar terms for semiotician include symbolist, signifier, interpreter, and decoder. A symbolist is someone who focuses on the use and meaning of symbols in society and culture. A signifier is someone who examines the relationship between a sign (a word, image, sound, object, etc.) and its meaning. An interpreter is someone who translates or explains the meaning of signs and symbols. Finally, a decoder is someone who analyzes and deciphers codes and symbols in various forms of communication. All of these terms refer to experts in the study of signs and symbols and their significance in human communication and culture.