This article analyzes, from a cognitive linguistic perspective, the ways in which new concepts emerging under the influence of technological, ecological, and political changes in the 21st century are expressed within the language system. It examines the semantic fields formed in social consciousness through new lexico-semantic units - such as neologisms, calques, and conceptual metaphors. Using terms like “greenwashing,” “intersectionnalité,” and “glottophobie” as examples, the study highlights the role of language in understanding and articulating social realities.