This document provides an overview of Jacques Derrida's concept of "differance". It defines differance as a pun on "difference" and "deferment", referring to the endless deferral of meaning in language due to words referring to other words. Differance is neither positive nor negative, but is the force that enables differentiation and postponing in sign systems. The document traces the concept back to Derrida's 1963 work and discusses how it challenges the relationship between signifiers and signifieds. It provides examples of how meanings can shift through an associative chain of words.