Raja laevis vs barndoor skate

Raja laevis and barndoor skate both are nouns.

Word	Noun	Adjective	Verb	Adverb
Raja laevis	Yes	No	No	No
barndoor skate	Yes	No	No	No

As nouns, Raja laevis and barndoor skate are synonyms defined as:

Raja laevis and barndoor skate: one of the largest skates (to 5 feet); an active skate easy to hook

Raja laevis (noun)	barndoor skate (noun)
one of the largest skates (to 5 feet); an active skate easy to hook	one of the largest skates (to 5 feet); an active skate easy to hook