nastygram vs paskudnyak

nastygram

noun
  • A written communication containing unpleasant material, especially one that criticizes, insults, or intimidates the recipient. 

paskudnyak

noun
  • A nasty or contemptible person. 

  • A young rascal; a boy who makes mischief. 

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