នាវា (Khmer) comes from Pali nava, from Sanskrit नव, from Proto-Balto-Slavic náwas, from Proto-Indo-Aryan náwas, from Proto-Indo-European néwyos, from Proto-Indo-European néwos, from Proto-Indo-European new- — new; to nod, assent to.
នាវា (Khmer): ship; boat