dower vs pitch in

dower

verb
  • To endow. 

  • To give a dower or dowry to. 

noun
  • The part of or interest in a deceased husband's property provided to his widow, usually in the form of a life estate. 

  • Property given by a groom directly to his bride at or before their wedding in order to legitimize the marriage; dowry. 

pitch in

verb
  • To begin briskly. 

  • To help out; lend assistance; contribute; to do one's part to help. 

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