grow fatter vs spread out

grow fatter

spread out

verb
  • Become further apart. 

  • To place items further apart. 

adj
  • Covering a wide area of space or long period of time. 

  • Far apart, not close to each other - far apart, extended over an expanse of space or time. 

How often have the words grow fatter and spread out occurred in a corpus of books? (source: Google Ngram Viewer )