お気の毒[okinodoku] pitiful
煙毒[endoku] smoke pollution
鉛中毒[enchuudoku] lead poisoning
鉛毒[endoku] lead poisoning
解毒[gedoku] anti-poison

解毒剤[gedokuzai] antidote
解毒薬[gedokuyaku] antidote
貝毒[kaidoku] shellfish poison
害毒[gaidoku] harm
気の毒[kinodoku] pitiful

矢っ張し[yappashi] also
一矢[isshi] an arrow
逸れ矢[soreya] stray arrow
遠矢[tooya] long-distance arrow (archery)
弓矢[yumiya] bow and arrow

光陰矢の如し[kouinyanogotoshi] time flies like an arrow
二の矢[ninoya] second arrow
無理矢理[muriyari] forcibly
矢印[yajirushi] arrow (mark or symbol)

井の中の蛙大海を知らず[inonakanokawazutaikaiwoshirazu] parochial
雨蛙[amagaeru] tree frog (esp. the Japanese tree frog, Hyla japonica)
蛙の子は蛙[kaerunokohakaeru] like father, like son
蛙跳び[kaerutobi] (game of) leapfrog
殿様蛙[tonosamagaeru] black-spotted pond frog (Rana nigromaculata)

蟇蛙[hikigaeru] toad (esp. the Japanese toad, Bufo japonicus)
蛙又[kaerumata] curved wooden support on top of the main beam of a house, now mainly decorative (shape evocates an open-legged frog)
青蛙[aogaeru] green (tree) frog
赤蛙[akagaeru] any brown or reddish-brown frog (esp. of family Ranidae)