emergency vs good luck

emergency

noun
  • Arising from or used in an emergency. 

  • A situation which poses an immediate risk and which requires urgent attention. 

  • An individual brought in at short notice to replace a member of staff, a player in a sporting team, etc. 

  • The department of a hospital that treats emergencies. 

good luck

noun
  • Desirable or beneficial fortune. 

intj
  • Used to wish fortune on someone or as encouragement. 

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