disseminate vs engraft

disseminate

verb
  • To sow and scatter principles, ideas, opinions, etc, or concrete things, for growth and propagation, like seeds. 

  • To become widespread. 

engraft

verb
  • To insert, as a scion of one tree or plant into another, for the purpose of propagation; graft onto a plant 

  • To fix firmly into place 

adj
  • Engrafted. 

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