in need vs poor as a church mouse

in need

prep
  • In distress or otherwise difficult circumstances. 

  • needing (the specified necessities). 

  • Lacking basic necessities such as food and shelter; poor; indigent. 

poor as a church mouse

adj
  • Very poor, to the point of starving or begging; utterly destitute. 

How often have the words in need and poor as a church mouse occurred in a corpus of books? (source: Google Ngram Viewer )