disk jockey vs broadcaster

disk jockey and broadcaster both are nouns.

Word	Noun	Adjective	Verb	Adverb
disk jockey	Yes	No	No	No
broadcaster	Yes	No	No	No

As nouns, broadcaster is a hypernym of disk jockey; that is, broadcaster is a word with a broader meaning than disk jockey:

disk jockey (noun)	broadcaster (noun)
a person who announces and plays popular recorded music	a mechanical device for scattering something (seed or fertilizer or sand etc.) in all directions
	someone who broadcasts on radio or television