This document discusses the Sapir-Whorf hypothesis, which proposes that the structure of a language influences its speakers' worldview or cognition. It covers several related concepts, including linguistic relativity, which argues that language conditions thought; semiotic relativity, which examines sign systems; and discursive relativity, which considers how language is tied to social and historical contexts. The document also explores applications of language relativity in educational practice and applied linguistic research, noting a growing interest in the language-culture relationship within the field.