cowslip vs pompon

cowslip

noun
  • A low-growing plant, Primula veris, with yellow flowers. 

  • Primula deorum, a flowering plant known as God's cowslip and rila cowslip 

  • Primula florindae, a flowering plant known as giant cowslip and Tibetan cowslip 

  • marsh marigold, Caltha palustris, a plant in the buttercup family, growing in wet, boggy locations. 

  • Pulmonaria angustifolia, blue cowslip or narrow-leaved lungwort 

  • Primula sikkimensis, a flowering plant known as Himalayan cowslip and Sikkim cowslip 

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 cowslip and pompon occurred in a corpus of books? (source: Google Ngram Viewer )