deepen vs montage

deepen

verb
  • To make more poignant or affecting; to increase in degree 

  • To make deep or deeper 

  • To make more sound or heavy. 

  • To become lower in tone 

  • To make darker or more intense; to darken 

  • To become deeper 

  • To become more intimate. 

  • To make lower in tone 

  • To become darker or more intense 

  • To become more thorough or extensive. 

  • To make more thorough or extensive. 

  • To become more sound or heavy. 

  • To make more intimate. 

montage

verb
  • To combine into, or depict as, a montage. 

noun
  • The art or process of doing this. 

  • A composite work, particularly an artwork, created by assembling or putting together other elements such as pieces of music, pictures, texts, videos, etc. 

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