shocker vs message

shocker and message both are nouns.

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

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

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

shocker (noun)	message (noun)
a sensational message (in a film or play or novel)	content communicating a message; what something is about
a shockingly bad person	a communication (usually brief) that is written or spoken or signaled