dedication vs message

dedication and message both are nouns.

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

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

dedication: a short message (as in a book or musical work or on a photograph) dedicating it to someone or something
message: a communication (usually brief) that is written or spoken or signaled

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

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

dedication (noun)	message (noun)
the act of binding yourself (intellectually or emotionally) to a course of action	content communicating a message; what something is about
complete and wholehearted fidelity	a communication (usually brief) that is written or spoken or signaled
a short message (as in a book or musical work or on a photograph) dedicating it to someone or something
a message that makes a pledge
a ceremony in which something (as a building) is dedicated to some goal or purpose