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

緋縅し鎧[hiodoshiyoroi] scarlet-threaded suit of armor (armour)
鎧一具[yoroiichigu] suit of armor
鎧戸[yoroido] slatted shutter
鎧球[gaikyuu] American football
鎧蜥蜴[yoroitokage] girdle-tailed lizard

鎧竜[gairyuu] ankylosaur (any dinosaur of infraorder Ankylosauria)
鎧袖一触[gaishuuisshoku] (beating someone) hands down
鎧鼠[yoroinezumi] armadillo
鎧草[yoroigusa] Angelica dahurica (species of angelica)