exposition vs theme

exposition

noun
  • An essay or speech in which any topic is discussed in detail. 

  • The abandonment of an unwanted child. 

  • An exhibition, especially of goods, artwork or cultural displays to the public. 

  • The act or process of declaring or describing something through either speech or writing; the portions and aspects of a piece of writing that exist mainly to describe the setting, characters and other non-plot elements. 

  • An opening section in fiction, in which background information about the characters, events or setting is conveyed. 

  • The opening section of a movement in sonata form; the opening section of a fugue. 

  • The action of exposing something to something, such as skin to the sunlight. 

theme

noun
  • A subject, now especially of a talk or an artistic piece; a topic. 

  • The main melody of a piece of music, especially one that is the source of variations. 

  • The stem of a word. 

  • A concept with multiple instantiations. 

  • Topic, what is generally being talked about, as opposed to rheme. 

  • A regional unit of organisation in the Byzantine empire. 

  • thematic relation of a noun phrase to a verb. 

  • Theta role in generative grammar and government and binding theory. 

  • A song, or a snippet of a song, that identifies a film, a TV program, a character, etc. by playing at the appropriate time. 

  • Any of various colors, or color palettes, in which a design is offered; (graphical user interface) any of various skins for an app, affecting the visuals and perhaps other elements such as sound effects. 

verb
  • To give a theme to. 

  • To apply a theme to; to change the visual appearance and/or layout of (software). 

How often have the words exposition and theme occurred in a corpus of books? (source: Google Ngram Viewer )