yellow-shafted flicker vs yellowhammer

yellow-shafted flicker and yellowhammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow-shafted flicker	Yes	No	No	No
yellowhammer	Yes	No	No	No

As nouns, yellow-shafted flicker and yellowhammer are synonyms defined as:

yellow-shafted flicker and yellowhammer: large flicker of eastern North America with a red neck and yellow undersurface to wings and tail

Other synonyms of yellow-shafted flicker include Colaptes auratus.

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