hog molly vs Hypentelium nigricans

hog molly and Hypentelium nigricans both are nouns.

Word	Noun	Adjective	Verb	Adverb
hog molly	Yes	No	No	No
Hypentelium nigricans	Yes	No	No	No

As nouns, hog molly and Hypentelium nigricans are synonyms defined as:

hog molly and Hypentelium nigricans: widely distributed in warm clear shallow streams

Other synonyms of hog molly include hog sucker.

hog molly (noun)	Hypentelium nigricans (noun)
widely distributed in warm clear shallow streams	widely distributed in warm clear shallow streams