theme vs tune

theme

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

  • 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). 

tune

noun
  • A melody. 

  • The act of tuning or maintenance. 

  • The state or condition of being correctly tuned. 

  • A song, or short musical composition. 

intj
  • Used to show appreciation or approval of a song. 

verb
  • To adjust (a musical instrument) so that it produces the correct pitches. 

  • To attune; to adapt in style of music; to make harmonious. 

  • to adjust the parameters of singing voice synthesis software such as VOCALOID (in order to achieve certain singing techniques, increase the human quality of the voice, etc.) 

  • To adjust or modify (esp. a mechanical or electrical device) so that it functions optimally. 

  • To adjust the frequency on a radio or TV set, so as to receive the desired channel. 

  • To be impudent towards; to cheek. 

  • To make more precise, intense, or effective; to put into a proper state or disposition. 

  • To give a certain tone or character to. 

  • Of faculties, senses, etc.: to adapt to or direct towards a particular target. 

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