truant vs unavailable

truant

adj
  • Absent without permission, especially from school. 

  • Wandering from business or duty; straying; loitering; idle, and shirking duty. 

noun
  • One who is absent without permission, especially from school. 

verb
  • To play truant. 

  • To idle away; to waste. 

  • To idle away time. 

unavailable

adj
  • Not available. 

noun
  • A communist who operated underground and was therefore not available for a political leadership position. 

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