buttlicker vs toadeater

buttlicker

noun
  • a contemptible person; an ass-kisser 

  • someone who performs rimming 

toadeater

noun
  • A fawning, obsequious parasite; a mean sycophant or flatterer. 

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