spatchcock vs volaille

spatchcock and volaille both are nouns.

Word	Noun	Adjective	Verb	Adverb
spatchcock	Yes	No	Yes	No
volaille	Yes	No	No	No

As nouns, volaille is a hypernym of spatchcock; that is, volaille is a word with a broader meaning than spatchcock:

spatchcock: flesh of a chicken (or game bird) split down the back and grilled (usually immediately after being killed)
volaille: the flesh of a chicken used for food

Other hypernyms of spatchcock include chicken, poulet.

spatchcock (noun)	volaille (noun)
flesh of a chicken (or game bird) split down the back and grilled (usually immediately after being killed)	the flesh of a chicken used for food

spatchcock (verb)	volaille (verb)
interpolate or insert (words) into a sentence or story
prepare for eating if or as if a spatchcock