cookout vs fish fry

cookout and fish fry both are nouns.

Word	Noun	Adjective	Verb	Adverb
cookout	Yes	No	No	No
fish fry	Yes	No	No	No

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

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

cookout (noun)	fish fry (noun)
an informal meal cooked and eaten outdoors	a cookout where fried fish is the main course