afield vs off the mark

afield

adv
  • Out in the open. 

  • On the field. 

  • Away (from the home or starting point, physical or conceptual); usually preceded by far (or farther, further). 

off the mark

prep
  • Making a start (generally in comparison to others). 

  • Inaccurate; not correct or appropriate. 

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