ignorant vs on the job

ignorant

adj
  • Ill-mannered, crude. 

  • Resulting from ignorance; foolish; silly. 

  • Not knowing (a fact or facts), unaware (of something). 

  • Unknowledgeable or uneducated; characterized by ignorance. 

noun
  • One who is ignorant. 

on the job

prep
  • working, busy, at work 

  • Having sex 

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