Discourse (from Latin discursus, "running to and from") denotes written and spoken communications such as:
As discourse, an enouncement (statement) is not a unit of semiotic signs, but an abstract construct that allows the semiotic signs to assign meaning, and so communicate specific, repeatable communications to, between, and among objects, subjects, and statements. Therefore, a discourse is composed of semiotic sequences (relations among signs that communicate meaning) between and among objects, subjects, and statements.
The term "discursive formation" (French: formation discursive) conceptually describes the regular communications (written and spoken) that produce such discourses, such conversations. As a philosopher, Michel Foucault applied the discursive formation in the analyses of large bodies of knowledge, such as political economy and natural history.
In the first sense-usage (semantics and discourse analysis), the term discourse is studied in corpus linguistics, the study of language expressed in corpora (samples) of "real world" text. In the second sense (the codified language of a field of enquiry) and in the third sense (a statement, un énoncé), the analysis of a discourse examines and determines the connections among language and structure and agency.
Moreover, because a discourse is a body of text meant to communicate specific data, information, and knowledge, there exist internal relations in the content of a given discourse; likewise, there exist external relations among discourses. As such, a discourse does not exist per se (in itself), but is related to other discourses, by way of inter-discursivity; therefore, in the course of intellectual enquiry, the discourse among researchers features the questions and answers of What is ...? and What is not. ..., conducted according to the meanings (denotation and connotation) of the concepts (statements) used in the given field of enquiry, such as anthropology, ethnography, and sociology; cultural studies and literary theory; the philosophy of science and feminism.