oblation vs offering

oblation

noun
  • The offering of worship, thanks etc. to a deity. 

  • A deed or gift offered charitably. 

offering

noun
  • A contribution given at a religious service. 

  • Something put forth, bid, proffered or tendered, such as for sale 

  • That which has been offered; a sacrifice. 

  • The act by which something is offered. 

  • An oblation or presentation made as a religious act. 

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