mud puppy vs Necturus maculosus

mud puppy and Necturus maculosus both are nouns.

Word	Noun	Adjective	Verb	Adverb
mud puppy	Yes	No	No	No
Necturus maculosus	Yes	No	No	No

As nouns, mud puppy and Necturus maculosus are synonyms defined as:

mud puppy and Necturus maculosus: aquatic North American salamander with red feathery external gills

mud puppy (noun)	Necturus maculosus (noun)
aquatic North American salamander with red feathery external gills	aquatic North American salamander with red feathery external gills
larval salamander of mountain lakes of Mexico that usually lives without metamorphosing
large salamander of North American rivers and streams