campaign vs incursion

campaign

noun
  • A series of operations undertaken to achieve a set goal. 

  • The period during which a blast furnace is continuously in operation. 

verb
  • Consistently ride in races for a racing season. 

  • To take part in a campaign. 

incursion

noun
  • An aggressive movement into somewhere; an invasion. 

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