This article examines the linguistic phenomenon of genericization, in which brand names evolve into common nouns or verbs through widespread everyday use. Focusing on a comparative analysis of English and Uzbek, the study explores how social practices, technological development, and consumer culture contribute to lexical change in both languages. Well-known examples such as Google and Xerox in English, and Tefal and Xerox in Uzbek, illustrate how brand dominance and communicative efficiency encourage speakers to adopt trademarked names as general terms. Drawing on established linguistic scholarship, the article demonstrates that genericization is not a deviation from linguistic norms but a natural outcome of language adaptation. Despite differences in cultural context and stylistic conventions, English and Uzbek display similar mechanisms of lexical innovation driven by frequency of use and social acceptance. The findings highlight the dynamic relationship between language and society and emphasize the role of everyday communication in shaping vocabulary across languages.