daywork vs farthing

daywork

noun
  • Work carried out or paid for on a daily basis; day labour. 

  • Work done during the day; specifically, the cover-work carried out by someone involved in intelligence work, as opposed to their secret activities. 

farthing

noun
  • Former British unit of currency worth one-quarter of an old penny; or a coin representing this. 

  • A very small quantity or value; the least possible amount. 

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