consideration vs vacancy

consideration

noun
  • Importance, claim to notice, regard. 

  • Something considered as a reason or ground for a (possible) decision. 

  • The tendency to consider others. 

  • The thought process of considering, of taking multiple or specified factors into account (with of being the main corresponding adposition). 

  • A payment or other recompense for something done. 

  • A matter of inducement for something promised; something valuable given as recompense for a promise, which causes the promise to become binding as a contract. 

vacancy

noun
  • Empty space. 

  • An available room in a hotel; guest house, etc. 

  • An unoccupied position or job. 

  • Lack of intelligence or understanding. 

  • A blank mind, unoccupied with thought. 

  • A defect in a crystal caused by the absence of an atom in a lattice 

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