almsgiving vs widow's mite

almsgiving

noun
  • The act of voluntarily giving alms, of making donations to the poor, charity. 

widow's mite

noun
  • A very small gift or donation which, however, represents a great sacrifice on the part of the giver. 

  • The lepton coin. 

How often have the words almsgiving and widow's mite occurred in a corpus of books? (source: Google Ngram Viewer )