congo snake vs blind eel

congo snake and blind eel both are nouns.

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

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

congo snake and blind 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, congo eel.

congo snake (noun)	blind 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