for keeps vs temporary

for keeps

prep
  • With an agreement or intention to retain what one gains or receives. 

  • Permanently, so that one can keep something indefinitely. 

  • With a strong competitive resolve to win or succeed, as in sports or business. 

temporary

adj
  • Existing only for a short time or short times; transient, ephemeral. 

  • Not permanent; existing only for a period or periods of time. 

noun
  • A temporary variable. 

  • One serving for a limited time; short-term employee. 

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