groundskeeping vs planting

groundskeeping

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

planting

noun
  • The act of setting a plant in the ground for growth. 

  • A plantation. 

  • A plant (or clipping) that has been freshly planted. 

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