←
Proto-Austronesian *bulaN (inherited)
←
Proto-Malayic *bulan (inherited)
←
Proto-Malayo-Polynesian *bulan (inherited)
→
Chamorro pulan (cognate)
→
Indonesian bulan (inherited)
→
Brunei Malay bulan (cognate)
→
Tagalog buwan (cognate)
→
Vietnamese trăng (cognate)