erratic vs weird

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. 

weird

adj
  • Deviating from the normal; bizarre. 

  • Having an unusually strange character or behaviour. 

adv
  • In a strange manner. 

verb
  • To warn solemnly; adjure. 

  • To destine; doom; change by witchcraft or sorcery. 

noun
  • Weirdness. 

  • That which comes to pass; a fact. 

  • A prediction. 

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