Toxostoma rufums vs brown thrush

Toxostoma rufums and brown thrush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Toxostoma rufums	Yes	No	No	No
brown thrush	Yes	No	No	No

As nouns, Toxostoma rufums and brown thrush are synonyms defined as:

Toxostoma rufums and brown thrush: common large songbird of eastern United States having reddish-brown plumage

Other synonyms of Toxostoma rufums include brown thrasher.

Toxostoma rufums (noun)	brown thrush (noun)
common large songbird of eastern United States having reddish-brown plumage	common large songbird of eastern United States having reddish-brown plumage