volaille vs hen

volaille and hen both are nouns.

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

As nouns, hen is a hyponym of volaille; that is, hen is a word with a more specific, narrower meaning than volaille:

Other hyponyms of volaille include broiler, capon, frier, fryer, pullet, roaster, spatchcock.

volaille (noun)	hen (noun)
the flesh of a chicken used for food	adult female chicken
	adult female bird
	female of certain aquatic animals e.g. octopus or lobster
	flesh of an older chicken suitable for stewing