battleground vs waypost

battleground

noun
  • A location where a battle may be fought, or has been fought. 

  • Any subject of dispute or contention. 

  • Any place or situation of dispute or contention 

waypost

noun
  • Something that guides or marks the way along a figurative journey; a temporary stopping point. 

  • A sign or other marker that indicates the way along a road or trail. 

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