savings bank vs thrift

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. 

thrift

noun
  • A savings bank. 

  • The characteristic of using a minimum of something (especially money). 

  • Any of various plants of the genus Armeria, particularly Armeria maritima. 

verb
  • To obtain from a thrift shop. 

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