brushwood vs coppice

brushwood

noun
  • Small trees and shrubs. 

  • Branches and twigs fallen from trees and shrubs. 

coppice

noun
  • A grove of small growth; a thicket of brushwood; a wood cut at certain times for fuel or other purposes, typically managed to promote growth and ensure a reliable supply of timber. See copse. 

verb
  • To manage (a wooded area) sustainably, as a coppice, by periodically cutting back woody plants to promote new growth. 

  • To sprout from the stump. 

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