cowslip vs quill

cowslip

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

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

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

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

  • Pulmonaria angustifolia, blue cowslip or narrow-leaved lungwort 

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

quill

noun
  • A sharply pointed, barbed, and easily detached needle-like structure that grows on the skin of a porcupine or hedgehog as a defense against predators. 

  • Something having the form of a quill, such as the fold or plain of a ruff, or (weaving) a spindle, or spool, upon which the thread for the woof is wound in a shuttle. 

  • The lower shaft of a feather, specifically the region lacking barbs. 

  • The plectrum with which musicians strike the strings of certain instruments. 

  • A thin piece of bark, especially of cinnamon or cinchona, curled up into a tube. 

  • The tube of a musical instrument. 

  • A pen made from a feather. 

  • The pen of a squid. 

  • Any pen. 

verb
  • To subject (a woman who is giving birth) to the practice of quilling (blowing pepper into her nose to induce or hasten labor). 

  • To pierce or be pierced with quills. 

  • To decorate with quillwork. 

  • To form fabric into small, rounded folds. 

  • To write. 

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