yellowhammer vs yellow-shafted flicker

yellowhammer and yellow-shafted flicker both are nouns.

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

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

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

Other synonyms of yellowhammer include Colaptes auratus.

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