tailed frog vs toad frog

tailed frog and toad frog both are nouns.

Word	Noun	Adjective	Verb	Adverb
tailed frog	Yes	No	No	No
toad frog	Yes	No	No	No

As nouns, toad frog is a hypernym of tailed frog; that is, toad frog is a word with a broader meaning than tailed frog:

tailed frog: western North American frog with a taillike copulatory organ
toad frog: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

Other hypernyms of tailed frog include anuran, batrachian, frog, salientian, toad.

tailed frog (noun)	toad frog (noun)
western North American frog with a taillike copulatory organ	any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species