jaybird vs Cyanocitta cristata

jaybird and Cyanocitta cristata both are nouns.

Word	Noun	Adjective	Verb	Adverb
jaybird	Yes	No	No	No
Cyanocitta cristata	Yes	No	No	No

As nouns, jaybird and Cyanocitta cristata are synonyms defined as:

jaybird and Cyanocitta cristata: common jay of eastern North America; bright blue with grey breast

Other synonyms of jaybird include blue jay.

jaybird (noun)	Cyanocitta cristata (noun)
common jay of eastern North America; bright blue with grey breast	common jay of eastern North America; bright blue with grey breast