bell toad vs toad

bell toad and toad both are nouns.

Word	Noun	Adjective	Verb	Adverb
bell toad	Yes	No	No	No
toad	Yes	No	No	No

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

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

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

bell toad (noun)	toad (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