refusal vs message

refusal and message both are nouns.

Word	Noun	Adjective	Verb	Adverb
refusal	Yes	No	No	No
message	Yes	No	Yes	No

As nouns, message is a hypernym of refusal; that is, message is a word with a broader meaning than refusal:

Other hypernyms of refusal include content, subject matter, substance.

refusal (noun)	message (noun)
a message refusing to accept something that is offered	content communicating a message; what something is about
the act of refusing	a communication (usually brief) that is written or spoken or signaled