Description of a speaker's message is known as a theme.
havey
theme
Theme is the general message of a story.
A message is the lesson or moral that the author wants the reader to take away from the story. The theme is the central idea or underlying message that runs throughout the entire story. These elements help give meaning and depth to the narrative.
theme
The theme of the story is always be true to yourself.
The theme is the author's message, a generalization about life.
The theme can be whatever you want it to be... you can have a band which sings about "sex, drugs, and rock n' roll", you can have a religious or anti-religious band, you can have a political band.. there is no one set theme or message.
The term you are looking for is "theme." Theme refers to the underlying message or main idea that the author is trying to convey through a literary work.
The theme of this book is friendship,enjoyful,loveful and many more
The theme of King Kong is peace.