prestige vs street credibility

prestige

verb
  • To start over at an earlier point in a video game with some type of bonus or reward. 

noun
  • The quality of how good the reputation of something or someone is, how favourably something or someone is regarded. 

adj
  • Regarded as relatively prestigious; often, considered the standard language or language variety, or a part of such a variety. 

street credibility

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