combine harvester vs grower

combine harvester

noun
  • A combine, a farming machine that harvests, threshes, and cleans grain plants. 

grower

noun
  • A farmer; one who grows things. 

  • Someone or something, especially music, that becomes more likeable over time. 

  • A man whose penis increases in size significantly when erect. 

  • Something that grows. 

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