cookout vs weenie roast

cookout and weenie roast both are nouns.

Word	Noun	Adjective	Verb	Adverb
cookout	Yes	No	No	No
weenie roast	Yes	No	No	No

As nouns, weenie roast is a hyponym of cookout; that is, weenie roast is a word with a more specific, narrower meaning than cookout:

Other hyponyms of cookout include barbecue, barbeque, clambake, fish fry, wiener roast, burgoo.

cookout (noun)	weenie roast (noun)
an informal meal cooked and eaten outdoors	a cookout where roasted frankfurters are the main course