barred owl vs Strix varia

barred owl and Strix varia both are nouns.

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

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

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

barred owl (noun)	Strix varia (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