congo snake vs amphiuma

congo snake and amphiuma both are nouns.

Word	Noun	Adjective	Verb	Adverb
congo snake	Yes	No	No	No
amphiuma	Yes	No	No	No

As nouns, congo snake and amphiuma are synonyms defined as:

congo snake and amphiuma: aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States

Other synonyms of congo snake include blind eel, congo eel.

congo snake (noun)	amphiuma (noun)
aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States	aquatic eel-shaped salamander having two pairs of very small feet; of still muddy waters in the southern United States