grubstake vs savings bank

grubstake

noun
  • An amount of money advanced to someone starting a business in return for a share of the future profits. 

  • Money, necessities stockpiled to sustain an effort for a period of time. 

  • Money, materials, tools, food etc. provided to a prospector in return for a share in future profits. 

verb
  • To supply such funds to. 

savings bank

noun
  • A type of financial institution that focuses on retail banking: savings of private depositors, payments, credits and insurances for individuals or small and medium-sized enterprises. 

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