ribbed toad vs Ascaphus trui

ribbed toad and Ascaphus trui both are nouns.

Word	Noun	Adjective	Verb	Adverb
ribbed toad	Yes	No	No	No
Ascaphus trui	Yes	No	No	No

As nouns, ribbed toad and Ascaphus trui are synonyms defined as:

ribbed toad and Ascaphus trui: western North American frog with a taillike copulatory organ

Other synonyms of ribbed toad include bell toad, tailed frog, tailed toad.

ribbed toad (noun)	Ascaphus trui (noun)
western North American frog with a taillike copulatory organ	western North American frog with a taillike copulatory organ