pinna vs pompon

pinna

noun
  • A leaflet or primary segment of a pinnate compound leaf. 

  • The visible part of the ear that resides outside of the head, the auricle; outer ear excluding the ear canal. 

  • A feather, wing, fin, or other similar appendage. 

pompon

noun
  • A hardy garden chrysanthemum with button-like flower heads. 

  • A bundle of yarn, string, ribbon, etc. tied in the middle and left loose at the ends, so as to form a puff or ball, as for decoration or a showy prop for cheerleading. 

  • Any of several dwarf varieties of the Provence rose. 

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