in need vs underprivileged

in need

prep
  • In distress or otherwise difficult circumstances. 

  • needing (the specified necessities). 

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

underprivileged

adj
  • Deprived of the opportunities and advantages of others, usually through no fault of one's own. 

noun
  • A deprived person; deprived people (normally used as a plural). 

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