interpolation vs message

interpolation and message both are nouns.

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

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

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

interpolation (noun)	message (noun)
the action of interjecting or interposing an action or remark that interrupts	content communicating a message; what something is about
(mathematics) calculation of the value of a function between the values already known	a communication (usually brief) that is written or spoken or signaled
a message (spoken or written) that is introduced or inserted