erratic vs spacy

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. 

spacy

adj
  • eccentric 

  • having much space 

  • spaced-out 

  • of, related to or connected with the extraterrestrial 

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