left-handed vs left-hander

left-handed

noun
  • Left-handed people, taken as a whole. 

adj
  • Of a coordinate system: not following the right-hand rule. 

  • Awkward or maladroit. 

  • Using one's left hand in preference to, or more skillfully than, one's right. 

  • Intended to be worn on, or used by, the left hand. 

  • Turning or spiraling from right to left; anticlockwise. 

  • Performed with the intention of doing harm or in transgression against convention or taboo. 

  • Insincere or malicious. 

left-hander

noun
  • One who is left-handed. 

  • A bend or turn to the left; a left-hand corner. 

  • A blow struck with the left hand. 

How often have the words left-handed and left-hander occurred in a corpus of books? (source: Google Ngram Viewer )