feathering vs penfish

feathering

noun
  • A feathered texture. 

  • Plumage. 

  • The fitting of feathers to arrows. 

  • Visible offshoots of the trails of ink written on overly absorbent paper. 

  • An arrangement of small arcs or foils separated by projecting cusps, frequently forming the feather-like ornament on the inner mouldings of arches. 

penfish

noun
  • A squid. 

  • Any of various porgies of the genus Calamus 

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