pellicle vs scurf

pellicle

noun
  • A thin skin or film. 

  • A skin or coating of proteins on the surface of meat to be smoked, improving the surface adhesion. 

  • The growth on the surface of a liquid culture. 

  • The skin of a mushroom cap. 

  • A thin plastic membrane used as a beam splitter or protective cover. 

  • The outermost layer of a mushroom, often used only for a surface that is viscid and easily peels off. 

  • Cuticle, the hard protective outer layer of certain life forms. 

  • The photosensitive emulsion of photographic film. 

scurf

noun
  • A skin disease. 

  • Minute membranous scales on the surface of some leaves, as in the goosefoot. 

  • A grey bull trout (Salvelinus confluentus). 

  • The foul remains of anything adherent. 

  • The flakes of skin that fall off as a result of a skin disease. 

  • Any crust-like formations on the skin, or in general. 

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