broadcast vs disperse

broadcast is a noun but disperse is not a noun.

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

As verbs, broadcast and disperse are synonyms defined as:

broadcast (noun)	disperse (noun)
message that is transmitted by radio or television
a radio or television show

broadcast (verb)	disperse (verb)
cause to become widely known	cause to separate
broadcast over the airwaves, as in radio or television	cause to become widely known
sow over a wide area, especially by hand	distribute loosely
	separate (light) into spectral rays
	move away from each other
	to cause to separate and go in different directions