offering vs tithing

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. 

tithing

noun
  • The tithe given as an offering to the church. 

  • The payment of tithes. 

  • A part of the hundred as a rural division of territory. 

  • The collection of tithes. 

  • Ten sheaves of wheat (originally set up as such for the tithe-proctor). 

  • A body of households (originally a tenth of a hundred or ten households) bound by frankpledge to collective responsibility and punishment for each other's behavior. 

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