The phenomenon of language contact occurs due to the influence of sociallinguistic factors, community dynamics, and international interactions. Consequently, it isa social phenomenon, a cultural encounter where languages coexist and mutually influenceeach other within a communicative community. Language contact contributes to theformation of diglossia, bilingualism, and borrowed words
phenomena of convergence, andinterference
and the emergence of pidgin and creole. This article provides a comprehensiveanalysis and synthesis of language contact from the perspectives of Vietnamese and Koreanlinguists, based on data from Vietnamese and Korean. The research results can be preliminaryapplied to conceptualize the phenomenon of language contact, contributing to the expansionof studies on language transformation and effective application in language teaching andlearning practices.