scabrid vs scruffy

scabrid

adj
  • scabrous; rough 

scruffy

adj
  • Scurfy. 

  • Untidy in appearance. 

noun
  • An artificial intelligence researcher who believes that intelligence is too complicated (or computationally intractable) to be solved with the sorts of homogeneous system favoured by the "neats". 

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