coalescing vs homogenization

coalescing

noun
  • coalescence 

homogenization

noun
  • Intensive mixing of mutually insoluble substances or groups of substances to obtain a soluble suspension or emulsion. 

  • The act of making something homogenous, or the same throughout; or the tendency of something to become homogenous. 

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