feather one's nest vs give away

feather one's nest

verb
  • To achieve benefits, especially financial ones, by taking advantage of the opportunities with which one is presented; to amass a comfortable amount of personal wealth. 

give away

verb
  • To concede an advantage in weight, time, height etc. 

  • To concede. 

  • To formally hand over a bride to the bridegroom; often by her father. 

  • To relinquish control over. 

  • To unintentionally reveal a secret, divulge undisclosed information, or expose someone. 

  • To make a gift of (something). 

How often have the words feather one's nest and give away occurred in a corpus of books? (source: Google Ngram Viewer )