Ferdinand de Saussure is considered the father of modern linguistics. His 'Course in General Linguistics' established the structuralist approach, arguing that language should be studied as a synchronic system of signs (langue) rather than focusing on its historical evolution (diachronic). He emphasized that language is a formal system where meaning is generated through the relationships between signs.

Both 'semiotics' and 'semiology' refer to the study of signs and symbols. 'Semiology' is the term favored by the European tradition, particularly following Ferdinand de Saussure, while 'semiotics' is the term favored by the American tradition, stemming from the work of Charles Sanders Peirce. In contemporary academic discourse, the terms are often used interchangeably to describe the same field of inquiry.

Ferdinand de Saussure, often called the father of modern linguistics, introduced the dichotomy of 'langue' and 'parole' in his seminal work, 'Course in General Linguistics'. 'Langue' represents the social, abstract system of language rules, while 'parole' refers to the individual, concrete act of speaking. This distinction provided the structuralist foundation for analyzing language as a formal system of signs.

Synchrony refers to the study of a language as it exists at a particular point in time, capturing its structure, usage, and characteristics at that moment. This concept, popularized by Ferdinand de Saussure, is essential in linguistics for understanding the internal dynamics of language systems without considering their historical evolution, which is instead studied under diachronic linguistics.

Ferdinand de Saussure, often called the father of modern linguistics, introduced the term 'semiology' in his seminal work, 'Course in General Linguistics'. He defined it as a science that studies the life of signs within society. While Charles Sanders Peirce independently developed a similar field called 'semiotics', the specific term 'semiology' is historically associated with the Saussurean tradition.

Bakhtin's philosophy emphasizes that language is never neutral or isolated. It is inherently dialogic, meaning every utterance is shaped by previous interactions and social contexts. Language carries the weight of history and the social lives of its speakers, reflecting the diverse ideologies and power dynamics present in society. Therefore, language is a living, evolving entity deeply embedded in the human experience.

Coined by Mikhail Bakhtin, heteroglossia refers to the presence of multiple voices, social languages, and perspectives within a single text. It suggests that language is never monolithic but is instead a site of struggle between different social, cultural, and ideological discourses. In literature, this allows for a polyphonic structure where various characters and narrators express conflicting worldviews, preventing the dominance of a single, authoritative authorial voice.

Michel Foucault is widely recognized for his contributions to structuralism, particularly in his early works, before his transition into post-structuralist thought. Structuralism focuses on the underlying systems and structures that govern human culture, language, and society. Foucault's analysis of power, knowledge, and discourse systems aligns with the structuralist interest in mapping the rules that define social and intellectual frameworks.

Noam Chomsky introduced the fundamental distinction between 'competence' and 'performance' in his theory of generative grammar. Competence refers to the speaker's internalized, abstract knowledge of the rules of their language, while performance refers to the actual, often imperfect, production of language in specific contexts. This distinction allowed linguists to focus on the underlying mental grammar of speakers rather than being distracted by the errors or hesitations inherent in everyday speech.

Syntagmatic relations refer to the sequential relationships between words and phrases within a sentence. It highlights how language elements are arranged in a specific order to convey meaning. This term is fundamental in structural linguistics, describing the horizontal axis of language where words combine to form larger units like phrases and clauses based on grammatical rules.