enforcible vs on the level

enforcible

adj
  • Capable of being enforced. 

on the level

prep
  • Synonym of on the square (“discreet reference to freemasonry”) 

  • Honest(ly), sincere(ly), straightforward(ly), fair(ly). 

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