right-hand vs spot-on

right-hand

adj
  • of, relating to, or located on the right 

  • in the direction or orientation to the right-hand rule (a right-hand thread) 

  • designed for use by the right hand 

spot-on

adj
  • correct; accurate; absolutely right 

  • excellent 

How often have the words right-hand and spot-on occurred in a corpus of books? (source: Google Ngram Viewer )