mandatory vs procontrol

mandatory

adj
  • Obligatory; required or commanded by authority. 

  • Of, being or relating to a mandate. 

noun
  • A sign or line that require the path of the disc to be above, below or to one side of it. 

procontrol

adj
  • Supportive of greater government control over society, authoritarian or supportive of greater authoritarianism. 

  • Synonym of antigun: supportive of greater gun control, typically inclusive of opposition to gun rights. 

  • Synonym of protectionist: supportive of export controls over international trade, especially for political ends or to prevent technology transfer. 

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