Implicature refers to the idea that a speaker can imply meaning beyond the literal interpretation of their words. This concept is often associated with the work of philosopher H.P. Grice, who introduced the notion of conversational implicature. For example, if someone says, "It's cold in here," they might be implying that they want someone to close a window, even though they haven't directly asked for it. There are two main types of implicature: conventional and conversational. Conventional implicature arises from specific words or phrases, while conversational implicature depends on the context of the conversation and the shared knowledge between speakers. Understanding implicature helps in grasping the nuances of communication.