crapaud vs South American bullfrog

crapaud and South American bullfrog both are nouns.

Word	Noun	Adjective	Verb	Adverb
crapaud	Yes	No	No	No
South American bullfrog	Yes	No	No	No

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

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

Other synonyms of crapaud include Leptodactylus pentadactylus.

crapaud (noun)	South American bullfrog (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