blat vs mutter

blat

verb
  • To make a senseless noise. 

  • To talk inconsiderately; blab. 

  • To cry, as a calf or sheep; bleat. 

  • To utter loudly or foolishly; blurt. 

  • To produce an overrich or overblown sound on a brass instrument such as a trumpet, trombone, or tuba. 

noun
  • The Soviet system of connections and social relationships; one's social or business network (in Russian or Soviet society). 

mutter

verb
  • To make a sound with a low, rumbling noise. 

  • To speak softly and incoherently, or with imperfect articulations. 

  • To utter words, especially complaints or angry expressions, indistinctly or with a low voice and lips partly closed; to say under one's breath. 

noun
  • A repressed or obscure utterance; an instance of muttering. 

  • Peas. 

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