悪球[akkyuu] hard ball to hit
逸球[ikkyuu] muffed ball
衛星地球局[eiseichikyuukyoku] (satellite) earth station
眼球[gankyuu] eyeball
気球[kikyuu] balloon

球戯[kyuugi] billiards
球技[kyuugi] ball game (e.g. baseball, tennis, soccer)
球菌[kyuukin] coccus
球形[kyuukei] globular or spherical shape

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

ジャガ芋[jagaimo] potato (Solanum tuberosum)
とろろ芋[tororoimo] yam
芋掘り[imohori] potato field (furrows)
芋茎[zuiki] taro stem
芋虫[imomushi] hornworm (caterpillar of a hawk moth)

芋蔓[imozuru] sweet-potato vines
芋づる式[imozurushiki] one after another
さつま芋[satsumaimo] sweet potato (Ipomoea batatas)
山芋[yamaimo] Japanese yam (Dioscorea japonica)