embiggen vs upscale

embiggen

verb
  • To enlarge; to make bigger. 

  • To enlarge or grow; to become bigger. 

upscale

verb
  • To increase in size, to scale up. 

adj
  • Marked by wealth or quality; high-class; upmarket. 

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