file card vs file-card

file card

noun

  • A tool for removing debris from between the teeth of a file. 

  • A card used as part of a file system. 

file-card

noun

  • A tool for removing debris from between the teeth of a file. 

  • Material with embedded wire teeth used for cleaning files; card-clothing 

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