Anas platyrhynchos vs mallard

Anas platyrhynchos and mallard both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anas platyrhynchos	Yes	No	No	No
mallard	Yes	No	No	No

As nouns, Anas platyrhynchos and mallard are synonyms defined as:

Anas platyrhynchos and mallard: wild dabbling duck from which domestic ducks are descended; widely distributed

Anas platyrhynchos (noun)	mallard (noun)
wild dabbling duck from which domestic ducks are descended; widely distributed	wild dabbling duck from which domestic ducks are descended; widely distributed