porifer vs soaker

porifer

noun
  • An animal of the phylum Porifera; a sponge. 

soaker

noun
  • A kind of perforated hose used to distribute drips of water to a number of plants. 

  • The experience of stepping in a deep puddle and having one's foot become completely engulfed in water. 

  • One who, or that which, soaks. 

  • A kind of knitted woollen diaper. 

  • A person suffering from alcoholism. 

  • A mixture of grains softened in water which is added to bread dough. 

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