broadcast vs game show

broadcast and game show both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcast	Yes	No	Yes	No
game show	Yes	No	No	No

As nouns, game show is a hyponym of broadcast; that is, game show is a word with a more specific, narrower meaning than broadcast:

broadcast: a radio or television show
game show: a television or radio program in which contestants compete for awards

broadcast (noun)	game show (noun)
message that is transmitted by radio or television	a television or radio program in which contestants compete for awards
a radio or television show

broadcast (verb)	game show (verb)
cause to become widely known
broadcast over the airwaves, as in radio or television
sow over a wide area, especially by hand