erratic vs steady

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. 

steady

adj
  • Constant in feeling, purpose, or pursuit; not fickle, changeable, or wavering; not easily moved or persuaded to alter a purpose; resolute. 

  • Smooth and not bumpy or with obstructions. 

  • Regular and even. 

  • Firm in standing or position; not tottering or shaking; fixed; firm. 

  • Slow. 

adv
  • To row with pressure at a low stroke-rating, often 18 strokes per minute. 

noun
  • A rest or support, as for the hand, a tool, or a piece of work. 

  • A regular boyfriend or girlfriend. 

  • A prostitute's regular customer. 

particle
  • Aspect marker indicating consistency or intensity. 

verb
  • To become stable. 

  • To stabilize; to prevent from shaking. 

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