floorcloth vs sponge cloth

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. 

sponge cloth

noun
  • Any cloth loosely woven of coarse yarn to produce a spongy look or texture, especially one constructed in honeycomb weave. 

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