Lexical Change: Synonym and Homonym in Batak Toba Language in North Sumatra

This study focuses on language change, specifically the lexical change of Batak Toba in two different areas. research aims to contribute other researchers and governments related future local maintaining itself. used a qualitative method, case study, analyze aspects among people who use their area. Miles Huberman’s technique collecting data was this research. The collected from Language videos video transcripted eliminated by identifying synonyms homonyms using theories. online dictionary verify meaning every synonym homonym From source, which is 25 (twenty-five) videos, total 22 words, with detail 14 words found through Tapanuli Tengah eight Humbang Hasundutan. Similarly, between these districts can also be found, 3 (three) homonyms. Lexical occurs because convergence, cultural borrowing, second learning, relexification.
 Keywords: homonym,