poulet vs roaster

poulet and roaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
poulet	Yes	No	No	No
roaster	Yes	No	No	No

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

Other hyponyms of poulet include broiler, capon, frier, fryer, pullet, spatchcock, hen.

poulet (noun)	roaster (noun)
the flesh of a chicken used for food	a special cooking pan for roasting
	flesh of a large young chicken over 3 1/2 lb suitable for roasting
	a cook who roasts food
	a harsh or humorous critic (sometimes intended as a facetious compliment)