遺精[isei] nocturnal emissions (of semen)
演算精度[enzanseido] operational precision
拡張倍精度[kakuchoubaiseido] extended double-precision
魚精[gyosei] milt
高精度[kouseido] high precision

射精[shasei] ejaculation
受精卵[juseiran] fertilized eggs
出精[shussei] diligence
出無精[debushou] stay at home
精しい[kuwashii] detailed

天魚[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
海鷂魚[ei] ray (fish)
斉魚[etsu] Japanese grenadier anchovy (Coilia nasus)
旗魚[kajiki] marlin
鶏魚[isagi] chicken grunt (species of fish, Parapristipoma trilineatum)

杜父魚[tofugyo] sculpin (any fish of family Cottidae, inc. the bullheads and the miller's-thumb)
堅魚[katsuo] skipjack tuna
魚網[gyomou] fishing net
魚屋[sakanaya] fish market
魚貝[gyokai] marine products