authenticate vs ghetto fabulous

authenticate

adj
  • Synonym of authentic. 

verb
  • To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit. 

  • To prove authentic; to determine as real and true. 

ghetto fabulous

adj
  • Authentic, keeping it real. 

  • Wealthy, but of ghetto roots and ethic. 

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