erratic vs sensible

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. 

sensible

adj
  • Able to be sensed by the senses or the psyche; able to be perceived. 

  • Acting with or showing good sense; able to make good judgements based on reason, or reflecting such ability. 

  • Characterized more by usefulness, practicality, or comfort than by attractiveness, formality, or fashionableness, especially of clothing. 

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