nastygram vs shrew

nastygram

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

shrew

noun
  • An ill-tempered, nagging woman: a scold. 

  • Any of numerous small, mouselike, chiefly nocturnal, mammals of the family Soricidae (order Soricomorpha). 

  • Certain other small mammals that resemble true shrews (order Soricomorpha). 

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