pish vs psht

pish

noun
  • A sibilant noise (e.g. "psshh") made by birders and ornithologists to attract small birds. 

verb
  • To try to attract birds by making a sibilant noise (e.g. "psshh"). 

  • To express contempt. 

adj
  • Of poor quality; very bad. 

intj
  • Expressing disdain. 

psht

intj
  • Synonym of scat 

  • Synonym of pshaw 

  • Synonym of shh 

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