Comparison of Japanese and Korean

The geographically proximate languages of Japanese (part of the Japonic languages) and Korean (part of the Koreanic languages) share considerable similarity in syntactic and morphological typology while having a small number of lexical resemblances. Observing the said similarities and probable history of Korean influence on Japanese culture, linguists have formulated different theories proposing a genetic relationship between them.

Source: Wikipedia — Comparison of Japanese and Korean (CC BY-SA 4.0)