meaninglessness vs message

meaninglessness and message both are nouns.

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

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

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

meaninglessness (noun)	message (noun)
the quality of having no value or significance	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