broadcaster vs d.j.

broadcaster and d.j. both are nouns.

Word	Noun	Adjective	Verb	Adverb
broadcaster	Yes	No	No	No
d.j.	Yes	No	No	No

As nouns, d.j. is a hyponym of broadcaster; that is, d.j. is a word with a more specific, narrower meaning than broadcaster:

Other hyponyms of broadcaster include announcer, broadcast journalist, disc jockey, disk jockey, DJ, telecaster.

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