floorcloth vs welcome mat

floorcloth

noun
  • A cloth, normally of flannel, used for cleaning floors. 

  • Material used in place of carpeting for covering floors, such as linoleum or oilcloth. 

welcome mat

noun
  • A doormat with a welcoming message on it. 

  • Any sign or indication of welcome. 

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