俄に[niwakani] suddenly
俄景気[niwakageiki] temporary boom
俄仕込み[niwakajikomi] hasty preparation
俄仕立て[niwakajitate] extemporary
俄成金[niwakanarikin] overnight millionaire

俄然[gazen] suddenly
俄造り[niwakazukuri] makeshift
俄分限[niwakabungen] mushroom millionaire
俄勉強[niwakabenkyou] cramming
俄盲[niwakamekura] sudden blindness

雨子[amago] land-locked variety of red-spotted masu trout (Oncorhynchus masou ishikawae)
ひと雨[hitoame] shower
雨雲[amagumo] rain cloud
雨蛙[amagaeru] tree frog (esp. the Japanese tree frog, Hyla japonica)
雨笠[amagasa] rain hat

雨具[amagu] rain gear
雨空[amazora] rainy sky
雨靴[amagutsu] waterproof shoes
雨戸[amado] sliding storm shutter