paddlefish vs Polyodon spathula

paddlefish and Polyodon spathula both are nouns.

Word	Noun	Adjective	Verb	Adverb
paddlefish	Yes	No	No	No
Polyodon spathula	Yes	No	No	No

As nouns, paddlefish and Polyodon spathula are synonyms defined as:

paddlefish and Polyodon spathula: primitive fish of the Mississippi valley having a long paddle-shaped snout

Other synonyms of paddlefish include duckbill.

paddlefish (noun)	Polyodon spathula (noun)
primitive fish of the Mississippi valley having a long paddle-shaped snout	primitive fish of the Mississippi valley having a long paddle-shaped snout