broadcast vs sportscast

broadcast and sportscast both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcast	Yes	No	Yes	No
sportscast	Yes	No	Yes	No

As verbs, sportscast is a hyponym of broadcast; that is, sportscast is a word with a more specific, narrower meaning than broadcast:

Other hyponyms of broadcast include satellite, telecast, televise, interrogate, rebroadcast, rerun.

broadcast (noun)	sportscast (noun)
message that is transmitted by radio or television	a broadcast of sports news or commentary
a radio or television show

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