ケーソン工法[keesonkouhou] caisson method
シールド工法[shiirudokouhou] shield method
ロボット工学[robottokougaku] robotics
圧延工場[atsuenkoujou] rolling mill
遺伝子工学[idenshikougaku] genetic engineering

印刷工[insatsukou] pressman
化学工学[kagakukougaku] chemical engineering
化学工業[kagakukougyou] chemical industry
化成工業[kaseikougyou] chemical industry
加工[kakou] manufacturing

華甲[kakou] aged 61
介甲[kaikou] crust-like shell
機甲[kikou] armour (e.g. tank)
龜甲[kikou] tortoise shell

甲乙[kouotsu] A and B
甲乙丙[kouotsuhei] ABC
甲殻[koukaku] carapace
甲殻類[koukakurui] crustacean

亜細亜[ajia] Asia (esp. "the Far East")
委細[isai] details
委細面談[isaimendan] details when I see you
共産党細胞[kyousantousaibou] communist cell
些細[sasai] trivial

細細[komagoma] minutely
細細[hosoboso] poor (living)
細い[hosoi] thin
細か[komaka] small
細かい[komakai] small

月と鼈[tsukitosuppon] like chalk and cheese (superficially similar, but completely different) (the moon and a turtle shell are both round, but they are otherwise completely different)
鼈甲[bekkou] tortoiseshell (of the hawksbill turtle)
鼈甲色[bekkouiro] amber (colour, color)
石鼈[hizaragai] chiton (any marine mollusk of the class Polyplacophora)
鼈甲蜂[bekkoubachi] spider wasp

田鼈[tagame] Lethocerus deyrollei (species of giant water bug)
鼈茸[suppontake] common stinkhorn (Phallus impudicus)
鼈甲細工[bekkouzaiku] article of tortoise shell
鼈甲飴[bekkouame] hard candy