Languages, understood as the particular set of speech norms of a particular community, are also a part of the larger culture of the community that speak them. Humans use language as a way of signalling identity with one cultural group and difference from others. Even among speakers of one language several different ways of using the language exist, and each is used to signal affiliation with particular subgroups within a larger culture. Linguists and anthropologists, particularly sociolinguists, ethnolinguists and linguistic anthropologists have specialized in studying how ways of speaking vary between speech communities.

A community's ways of using language is a part of the community's culture, just as other shared practices are, it is way of displaying group identity. Ways of speaking function not only to facilitate communication, but also to identify the social position of the speaker. Linguists use the term varieties, a term that encompasses geographically or socioculturally defined dialects as well as the jargons or styles of subcultures, to refer to the different ways of speaking a language. Linguistic anthropologists and sociologists of language define communicative style as the ways that language is used and understood within a particular culture.[19]

Languages do not differ only in pronunciation, vocabulary or grammar, but also through having different "cultures of speaking". Some cultures for example have elaborate systems of "social deixis", systems of signalling social distance through linguistic means.[20] In English, social deixis is shown mostly though distinguishing between addressing some people by first name and others by surname, but also in titles such as "Mrs.", "boy", "Doctor" or "Your Honor", but in other languages such systems may be highly complex and codified in the entire grammar and vocabulary of the language. For instance, in several languages of east Asia, such as Thai, Burmese and Javanese, different words are used according to whether a speaker is addressing someone of higher or lower rank than oneself in a ranking system with animals and children ranking the lowest and gods and members of royalty as the highest.[20]