plain English vs tush

plain English

noun
  • English that does not use any jargon or technical / scientific terminology. 

tush

noun
  • The buttocks. 

  • A tusk. 

  • Nonsense; tosh. 

  • A small tusk sometimes found on the female Indian elephant. 

verb
  • To express contempt; rebuke. 

  • To pull or drag a heavy object such as a tree or log. 

intj
  • An exclamation of contempt or rebuke. 

How often have the words plain English and tush occurred in a corpus of books? (source: Google Ngram Viewer )