notice vs signpost

notice

verb
  • To be noticeable; to show. 

  • To become aware of; to observe. 

noun
  • A published critical review of a play or the like. 

  • A written or printed announcement. 

  • Advance notification of termination of employment, given by an employer to an employee or vice versa. 

  • The act of observing; perception. 

  • A formal notification or warning. 

  • Prior notification. 

signpost

verb
  • To signal, as if with a signpost 

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

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

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

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