snuffle vs stertor

snuffle

noun
  • An act of snuffling; sniffing loudly 

verb
  • To sniff or smell with the nose loudly and audibly. 

  • To speak through the nose; to breathe through the nose when it is obstructed, so as to make a broken sound. 

stertor

noun
  • The act of snoring, especially heavy snoring. 

  • A snoring sound, as for example even during wakefulness in infants with breathing difficulties. 

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