bootlicker vs toadeater

bootlicker

noun
  • A person who behaves in a servile or obsequious manner; a toady 

  • Anyone who is seen as supporting authoritarianism. 

toadeater

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

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