琉璃[ruri] lapis lazuli
琉球列島[ryuukyuurettou] Ryukyu Islands
琉球諸島[ryuukyuushotou] Ryukyu Islands
琉球音階[ryuukyuuonkai] Okinawan scale (hemitonic pentatonic scale: do, mi, fa, so, ti)
琉球語[ryuukyuugo] Ryukyuan languages

琉歌[ryuuka] Okinawan fixed form poetry
三筋琉球雀鯛[misujiryuukyuusuzumedai] whitetail dascyllus (Dascyllus aruanus, species of damselfish from the Indo- West Pacific)
琉球芋[ryuukyuuimo] sweet potato (Ipomoea batatas)
琉球藍[ryuukyuuai] Assam indigo (Strobilanthes cusia)
琉球古武術[ryuukyuukobujutsu] Okinawan kobudo