jajillion vs quintillion

jajillion

noun
  • An unspecified large number (of). 

quintillion

noun
  • Any very large number, exceeding normal description. 

num
  • A billion billion: 1 followed by eighteen zeros, 10¹⁸. 

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