nonsense vs message

nonsense and message both are nouns.

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

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

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

nonsense (noun)	message (noun)
ornamental objects of no great value	content communicating a message; what something is about
a message that seems to convey no meaning	a communication (usually brief) that is written or spoken or signaled

nonsense (adjective)	message (adjective)
having no intelligible meaning