true toad vs anuran

true toad and anuran both are nouns.

Word	Noun	Adjective	Verb	Adverb
true toad	Yes	No	No	No
anuran	Yes	Yes	No	No

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

true toad: tailless amphibian similar to a frog but more terrestrial and having drier warty skin
anuran: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

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

true toad (noun)	anuran (noun)
tailless amphibian similar to a frog but more terrestrial and having drier warty skin	any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

true toad (adjective)	anuran (adjective)
	relating to frogs and toads