sifter vs strainer

sifter

noun
  • One who sifts. 

  • Any lamellirostral bird, as a duck or goose, so called because it sifts or strains its food from the water and mud by means of the lamellae of the beak. 

  • A tool for sifting, especially one for powdered cooking ingredients. 

strainer

noun
  • One who strains. 

  • A perforated screen or openwork (usually at the end of a suction pipe of a pump), used to prevent solid bodies from mixing in a liquid stream or flowline. 

  • A device through which a liquid is passed for purification, filtering or separation from solid matter; anything (including a screen or a cloth) used to strain a liquid. 

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