slavish vs truckling

slavish

adj
  • in the manner of a slave; abject 

  • utterly faithful; totally lacking originality, creativity, or reflection 

truckling

adj
  • Apt to truckle, often fawning, obsequious, ingratiating. 

noun
  • fawning; ingratiation 

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