pail vs slop-bowl

pail

noun
  • A vessel of wood, tin, plastic, etc., usually cylindrical and having a handle -- used especially for carrying liquids, for example water or milk; a bucket (sometimes with a cover). 

  • A closed (covered) cylindrical shipping container. 

slop-bowl

noun
  • Part of a traditional tea set, used to empty the cold tea and dregs in tea cups before refilling with hot tea. Usually pottery or silver. 

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