comprehensive vs perfunctory

comprehensive

noun
  • A comprehensive school. 

adj
  • Broadly or completely covering; including a large proportion of something. 

perfunctory

adj
  • Performed in a careless or indifferent manner as a thing of rote. 

  • Done only or merely to conform to a minimal standard or to fulfill a protocol or presumptive duty. 

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