big up vs embiggen

big up

verb
  • To become big. 

  • To proclaim or exaggerate the importance of; to promote. 

noun
  • Significant respect or acclaim. 

embiggen

verb
  • To enlarge; to make bigger. 

  • To enlarge or grow; to become bigger. 

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