agriculture vs groundskeeping

agriculture

noun
  • The art or science of cultivating the ground, including the harvesting of crops, and the rearing and management of livestock 

groundskeeping

noun
  • The activity of tending an area of land for aesthetic or functional purposes; typically as an employee of a person or institution 

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