Paris - signs

From Wikipedia- In semiotics, a sign is "something that stands for something else, to someone in some capacity". It may be understood as a discrete unit of meaning, and includes words, images, gestures, scents, tastes, textures, sounds – essentially all of the ways in which information can be communicated as a message by any sentient, reasoning mind to another.
The nature of signs has long been discussed in philosophy. Initially, within linguistics and later semiotics, there were two general schools of thought: those who proposed that signs are ‘dyadic’ (i.e. having two parts), and those who proposed that signs are interpreted in a recursive pattern of triadic (i.e. three-part) relationships.