scanty vs unfrequent

scanty

adj
  • Somewhat less than is needed in amplitude or extent. 

  • Sparing; niggardly; parsimonious; stingy. 

unfrequent

adj
  • Not frequent; not common; not happening often; infrequent. 

verb
  • To stop frequenting; cease to frequent. 

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