yellowhammer vs Emberiza citrinella

yellowhammer and Emberiza citrinella both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellowhammer	Yes	No	No	No
Emberiza citrinella	Yes	No	No	No

As nouns, yellowhammer and Emberiza citrinella are synonyms defined as:

yellowhammer and Emberiza citrinella: European bunting the male being bright yellow

Other synonyms of yellowhammer include yellow bunting.

yellowhammer (noun)	Emberiza citrinella (noun)
European bunting the male being bright yellow	European bunting the male being bright yellow
large flicker of eastern North America with a red neck and yellow undersurface to wings and tail