buildup vs forfeiture

buildup

noun
  • An accumulation; an increase; a gradual development. 

  • The construction of a composite core to repair a damaged tooth. 

forfeiture

noun
  • The loss of forfeit property. 

  • The property lost as a forfeit. 

  • Any loss occasioned by one's own actions. 

  • A legal action whereby a person loses all interest in the forfeit property. 

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