central theme
nounUK /ˈsɛntrəl θiːm/
US /ˈsɛntrəl θim/
The main idea that a story or book is mostly about.
The central theme of the story is that friends help each other.
OTHER MEANINGS
2. The most important subject discussed at an event or in a speech.
The central theme of the meeting was keeping the park clean.
3. The repeated idea that ties together the parts of a piece of art or music.
The painting's central theme is the beauty of the sea.
4. The main focus of a project or plan.
Safety was the central theme of the new school rules.