obstetrical toad vs toad frog

obstetrical toad and toad frog both are nouns.

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

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

obstetrical toad: European toad whose male carries the fertilized eggs wrapped around its hind legs until they hatch
toad frog: any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species

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

obstetrical toad (noun)	toad frog (noun)
European toad whose male carries the fertilized eggs wrapped around its hind legs until they hatch	any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species