radio theatre vs dramatic work

radio theatre and dramatic work both are nouns.

Word	Noun	Adjective	Verb	Adverb
radio theatre	Yes	No	No	No
dramatic work	Yes	No	No	No

As nouns, dramatic work is a hypernym of radio theatre; that is, dramatic work is a word with a broader meaning than radio theatre:

radio theatre: a dramatized, purely acoustic performance, broadcast on radio or published on audio media, such as tape or CD.
dramatic work: a play for performance on the stage or television or in a movie etc.

Other hypernyms of radio theatre include dramatic composition.

radio theatre (noun)	dramatic work (noun)
a dramatized, purely acoustic performance, broadcast on radio or published on audio media, such as tape or CD.	a play for performance on the stage or television or in a movie etc.