dogfish vs Amia calva

dogfish and Amia calva both are nouns.

Word	Noun	Adjective	Verb	Adverb
dogfish	Yes	No	No	No
Amia calva	Yes	No	No	No

As nouns, dogfish and Amia calva are synonyms defined as:

dogfish and Amia calva: primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America

Other synonyms of dogfish include bowfin, grindle.

dogfish (noun)	Amia calva (noun)
any of several small sharks	primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America
primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America