logo vs signpost

logo

noun
  • A visual symbol or emblem that acts as a trademark or a means of identification of a company or organization. 

  • An audio recording for the same purpose; a jingle. 

  • A single graphic which contains one or more separate elements. 

  • An ensign, a badge of office, rank, or power. 

signpost

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. 

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. 

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