breadcrumb vs income

breadcrumb

noun
  • A tiny piece of bread, either one that falls from bread as it is cut or eaten, or one made deliberately by crumbling bread. 

  • A single link in a chain indicating the hierarchical location of a directory, web page or similar, used as a navigation aid. 

  • One in a series of clues leading to a person or place. 

verb
  • To add navigational breadcrumbs to (a web page or user interface). 

  • To use clues or enticements to lead someone in the desired direction. 

  • To sprinkle breadcrumbs on to food, normally before cooking. 

income

noun
  • That which is taken into the body as food; the ingesta; sometimes restricted to the nutritive, or digestible, portion of the food. 

  • Money one earns by working or by capitalising on the work of others. 

  • A disease or ailment without known or apparent cause, as distinguished from one induced by accident or contagion; an oncome. 

  • Money coming in to a fund, account, or policy. 

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