stand by vs weaken

stand by

verb
  • To support; to continue to support despite things being bad. 

  • To wait in expectation of some event; to be ready. 

  • To remain loyal or faithful to. 

  • To do nothing. To be inactive in a situation. 

weaken

verb
  • To make weaker or less strong. 

  • To become weaker or less strong. 

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