erratic vs even

erratic

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

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

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

  • Anything that has erratic characteristics. 

even

adj
  • Without great variation. 

  • Flat and level. 

  • Equal in proportion, quantity, size, etc. 

  • On equal monetary terms; neither owing nor being owed. 

  • parallel; on a level; reaching the same limit. 

  • On equal terms of a moral sort; quits. 

  • Convenient for rounding other numbers to; for example, ending in a zero. 

  • Divisible by two. 

noun
  • An even number. 

verb
  • To make flat and level. 

adv
  • In reality; implying an extreme example in the case mentioned, as compared to the implied reality. 

  • Emphasizing a comparative. 

  • Signalling a correction of one's previous utterance; rather, that is. 

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