比ひ較かく言げん語ご学がくひかくげんごがくじ字FuriganaMeanings1nouncomparative linguisticsAcademic field that studies relationships between languages, reconstructs proto-languages, and classifies language families.比ひ較かく言げん語ご学がくは、言げん語ごの歴れき史し的てきな変へん化かを研けん究