bank up vs spile

bank up

verb
  • To press a mound of something against something else. 

  • To make a mound to guard against something. 

spile

verb
  • To drive piles into. 

  • To provide (a barrel, tree etc.) with a spile. 

  • To support by means of spiles. 

  • spoil. 

  • To plug (a hole) with a spile. 

  • To draw off (a liquid) using a spile. 

noun
  • A pile; a post or girder. 

  • A spigot or plug used to stop the hole in a barrel or cask. 

  • A spout inserted in a maple (or other tree) to draw off sap. 

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