milepost vs paling

milepost

noun
  • A sign or post beside a railway marking the distance from the (actual or nominal) start of a line (usually the principal terminus or junction with a more major line) 

  • A post on a highway, often with one or more fingerposts, showing the distance in miles to nearby places 

verb
  • To place mileposts along (a road, etc.). 

paling

noun
  • A pointed stick used to make a fence. 

  • A fence made of galvanized sheeting. 

  • A fence made of palings. 

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