cowslip vs water dragon

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 

water dragon

noun
  • A marsh marigold (Caltha palustris) 

  • Any of various agamid lizards of eastern Asia and Australasia, including the genera Physignathus, Intellagama, and Tropicagama, all of subfamily Amphibolurinae. 

  • The lizard's tail plant (Saururus cernuus) 

  • A knucker, a lizard of English folklore. 

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