梓弓[azusayumi] catalpa bow
弓具[kyuugu] things used in archery
弓形[yuminari] arched
弓弦[yumizuru] bowstring
弓術[kyuujutsu] (Japanese) archery

弓道[kyuudou] (Japanese) archery
弓矢[yumiya] bow and arrow
鼓弓[kokyuu] kokyu (3 or 4-stringed bowed Japanese musical instrument)
半弓[hankyuu] small bow

弁鰓類[bensairui] lamellibranches (i.e. bivalves)
鰓呼吸[erakokyuu] branchial respiration (breathing using gills)
鰓蓋[erabuta] gill cover
鰓孔[eraana] gill slit
鰓裂[sairetsu] gill slit

腸鰓類[chousairui] enteropneusts (hemichordates of class Enteropneusta)
翼鰓類[yokusairui] pterobranchs (hemichordates of class Pterobranchia)
海鰓[umiera] sea pen (any coelenterate of the family Pennatulidae or related families)
板鰓類[bansairui] elasmobranchs