continuous vs erratic

continuous

adj
  • Not deviating or varying from uniformity; not interrupted; not joined or articulated. 

  • Expressing an ongoing action or state. 

  • Such that, for every x in the domain, for each small open interval D about f(x), there's an interval containing x whose image is in D. 

  • Without stopping; without a break, cessation, or interruption. 

  • Without intervening space; continued. 

  • Such that each open set in the target space has an open preimage (in the domain space, with respect to the given function). 

erratic

adj
  • Deviating from normal opinions or actions; eccentric; odd. 

  • Unsteady, random; prone to unexpected changes; not consistent. 

noun
  • A rock moved from one location to another, usually by a glacier. 

  • Anything that has erratic characteristics. 

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