cowslip vs pinion

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 

pinion

noun
  • A moth of the genus Lithophane. 

  • The smallest gear in a gear train. 

  • Any of the outermost primary feathers on a bird's wing. 

  • The joint of a bird's wing farthest from the body. 

  • A wing. 

verb
  • To restrain; to limit. 

  • To cut off the pinion of a bird’s wing, or otherwise disable or bind its wings, in order to prevent it from flying. 

  • To bind the arms of someone, so as to deprive him of their use; to disable by so binding. 

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