furtive vs thievish

furtive

adj
  • Of a person, etc.: inclined to steal; pilfering, thieving. 

  • Of a thing: done with evasive or guilty secrecy. 

  • Of a thing: that has been acquired by theft; stolen; also (generally) taken stealthily. 

  • Of a person or an animal: sly, stealthy. 

thievish

adj
  • Having a tendency to steal. 

  • Having the manner of a thief; furtive; stealthy. 

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