bar line vs strikethrough

bar line

noun
  • A vertical line in musical notation used to separate two bars or measures. 

  • Synonym of crossline (“type of headline”) 

strikethrough

noun
  • A horizontal or oblique line striking out individual characters. 

  • An overlaid horizontal line striking out other characters. 

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