Question

What is a 'theme'?

Answer 1

The subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic:

Answer 2

Noun
The subject of a talk, a piece of writing, a person's thoughts, or an exhibition; a topic: "the theme of the sermon was reverence".
Verb
Give a particular setting or ambience to (a venue or activity): "themed menus".
Synonyms
topic - subject - text - motif - matter

Answer 3

A theme is the central idea of the story that is inferred by the reader from details in the story. An example is humility can raise people to greatness.
the main part of the story