chart vs undirected graph

chart

noun
  • A graph. 

  • A record of a patient's diagnosis, care instructions, and recent history. 

  • A diagram. 

  • A tabular presentation of data; a table. 

  • A map illustrating the geography of a specific phenomenon. 

  • A navigator's map. 

  • Synonym of coordinate chart. 

  • A ranked listing of competitors, as of recorded music. 

  • A written deed; a charter. 

verb
  • To record systematically. 

  • To appear on a hit-recording chart. 

  • To draw or figure out (a route or plan). 

  • To draw a chart or map of. 

undirected graph

noun
  • A graph in which the edges are not ordered, so the edge (a, b) is identical to the edge (b, a). 

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