Strix varia vs barred owl

Strix varia and barred owl both are nouns.

Word	Noun	Adjective	Verb	Adverb
Strix varia	Yes	No	No	No
barred owl	Yes	No	No	No

As nouns, Strix varia and barred owl are synonyms defined as:

Strix varia and barred owl: large owl of eastern North America having its breast and abdomen streaked with brown

Strix varia (noun)	barred owl (noun)
large owl of eastern North America having its breast and abdomen streaked with brown	large owl of eastern North America having its breast and abdomen streaked with brown