仏陀 (Japanese) comes from Chinese 佛陀, from Pali Buddha, from Sanskrit बुद्ध, from Proto-Indo-Aryan buddʰás, from Proto-Indo-Iranian bʰudᶻdʰás, from Proto-Indo-European bʰudʰtós, from Proto-Indo-European bʰewdʰ- — to be awake, be aware.
仏陀 (Japanese): the Buddha