clean potato vs respectable

clean potato

noun
  • A person of faultless character. 

  • Something that is excellent. 

respectable

noun
  • A person who is respectable. 

adj
  • Deserving respect. 

  • Decent; satisfactory. 

  • Moderately well-to-do. 

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