simulcast vs broadcast

simulcast and broadcast both are nouns.

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

As nouns, broadcast is a hypernym of simulcast; that is, broadcast is a word with a broader meaning than simulcast:

simulcast: a broadcast that is carried simultaneously by radio and television (or by FM and AM radio)
broadcast: message that is transmitted by radio or television

simulcast (noun)	broadcast (noun)
a broadcast that is carried simultaneously by radio and television (or by FM and AM radio)	message that is transmitted by radio or television
	a radio or television show

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