subtheme

/ˈsʌbθim/
noun
  1. A secondary or less important theme within a larger theme, especially in a discussion, piece of writing, or artistic work.
    • In the novel, love is a subtheme that runs alongside the main story of war.
    • The report covers several subthemes, including education and healthcare reform.
    • The conference had an overall theme of sustainability, with a subtheme about renewable energy.
Synonyms
What does "subtheme" mean? | whatsthatwordmean | whatsthatwordmean