猿股[sarumata] undershorts
股引き[momohiki] close fitting trousers
股間節[kokansetsu] hip joint
股肱[kokou] one's right-hand man
股旅[matatabi] wandering life of a gambler

三つ股[mitsumata] forked stick
三股[sanmata] forked stick
刺股[sasumata] two-pronged weapon for catching a criminal
太股[futomomo] thigh

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)