cinereous vs mousy

cinereous

adj
  • Of an ash-gray colour. 

  • Containing ashes. 

  • Like ashes. 

mousy

adj
  • Of a greyish-brown colour. 

  • Abounding in or infested with mice. 

  • mousy 

  • Timid. 

  • Quiet; stealthy. 

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