蛙

Word usually written using kana alone

frog

かわず／カワズ only

kajika frog (Buergeria buergeri)

toad (esp. the Japanese toad, Bufo japonicus)

tree frog (esp. the Japanese tree frog, Hyla japonica)

green (tree) frog

wrinkled frog (Rana rugosa)

poison dart frog (Dendrobatidae spp.); dart-poison frog

bullfrog

Asian grass frog (Fejervarya limnocharis); Indian rice frog; cricket frog

American bullfrog (Lithobates catesbeianus)

frog in a well; someone with a narrow perspective

any brown or reddish-brown frog of the family Ranidae

Japanese brown frog (Rana japonica)

black-spotted pond frog (Rana nigromaculata)

(game of) leapfrog; leapfrogging

African clawed frog (Xenopus laevis)

horned frog (Ceratophrys spp.)

sound of frogs croaking

Australian green tree frog (Litoria caerulea); green tree frog; White's tree frog; dumpy tree frog

frog calling

forest green tree frog (Rhacophorus arboreus)

curved wooden support on top of the main beam of a house, now mainly decorative (shape evocates an open-legged frog)

Colloquial

frog (esp. the wrinkled frog or Asian grass frog); toad (esp. the Japanese toad)

frogfish (any fish of family Antennariidae, esp. the striated frogfish, Antennarius striatus)

Colloquial

toad with wart-covered skin (esp. the Japanese toad or the wrinkled frog)

kajika frog (Buergeria buergeri)