signpost vs waypost

signpost

noun
  • A post bearing a sign that gives information on directions. 

  • A word or phrase within a clue that serves as an indicator, rather than being fodder. 

verb
  • To indicate logical progress of a discourse using words or phrases such as now, right, to recap, to sum up, as I was saying, etc. 

  • To install signposts on. 

  • To signal, as if with a signpost 

  • To direct (somebody) to services, resources, etc. 

waypost

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

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

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