rogue vs wild card

rogue

noun
  • A scoundrel, rascal or unprincipled, deceitful, and unreliable person. 

  • A vagrant. 

  • A plant that shows some undesirable variation. 

  • A character class focusing on stealthy conduct. 

  • An aggressive animal separate from the herd, especially an elephant. 

  • Deceitful software pretending to be anti-spyware, but in fact being malicious software itself. 

  • A mischievous scamp. 

adj
  • Mischievous, unpredictable. 

  • Large, destructive and unpredictable. 

  • Deceitful, unprincipled. 

  • Vicious and solitary. 

verb
  • To cull; to destroy plants not meeting a required standard, especially when saving seed, rogue or unwanted plants are removed before pollination. 

wild card

noun
  • A competitor or team that is allowed to compete in a tournament despite not reaching the normal standards to qualify for inclusion. 

  • A card that can be assigned any value or used to substitute for any needed card. 

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