South American bullfrog vs Leptodactylus pentadactylus

South American bullfrog and Leptodactylus pentadactylus both are nouns.

Word	Noun	Adjective	Verb	Adverb
South American bullfrog	Yes	No	No	No
Leptodactylus pentadactylus	Yes	No	No	No

As nouns, South American bullfrog and Leptodactylus pentadactylus are synonyms defined as:

South American bullfrog and Leptodactylus pentadactylus: large toothed frog of South America and Central America resembling the bullfrog

Other synonyms of South American bullfrog include crapaud.

South American bullfrog (noun)	Leptodactylus pentadactylus (noun)
large toothed frog of South America and Central America resembling the bullfrog	large toothed frog of South America and Central America resembling the bullfrog