spadefoot vs toad

spadefoot and toad both are nouns.

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

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

spadefoot: a burrowing toad of the Northern Hemisphere with a horny spade-like projection on each hind foot
toad: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

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

spadefoot (noun)	toad (noun)
a burrowing toad of the Northern Hemisphere with a horny spade-like projection on each hind foot	any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species