robber frog vs anuran

robber frog and anuran both are nouns.

Word	Noun	Adjective	Verb	Adverb
robber frog	Yes	No	No	No
anuran	Yes	Yes	No	No

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

robber frog: small terrestrial frog of tropical America
anuran: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

Other hypernyms of robber frog include batrachian, frog, salientian, toad, toad frog.

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

robber frog: of southwest United States and Mexico; call is like a dog's bark
anuran: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

Other hypernyms of robber frog include batrachian, frog, salientian, toad, toad frog.

robber frog (noun)	anuran (noun)
small terrestrial frog of tropical America	any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species
of southwest United States and Mexico; call is like a dog's bark

robber frog (adjective)	anuran (adjective)
	relating to frogs and toads