noun
comparative linguistics
Academic field that studies relationships between languages, reconstructs proto-languages, and classifies language families.
比較言語学は、言語の歴史的な変化を研究する学問です。
Comparative linguistics is a discipline that studies historical changes in languages.
彼は比較言語学の手法を使って、古代語の再構を試みた。
He attempted to reconstruct an ancient language using methods of comparative linguistics.