congo snake vs congo eel

congo snake and congo eel both are nouns.

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

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

congo snake and congo eel: 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 amphiuma, blind eel.

congo snake (noun)	congo eel (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