cowslip vs may

cowslip

noun
  • 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 

  • 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 

may

noun
  • The hawthorn bush or its blossoms. 

verb
  • Expressing a wish (with present subjunctive effect). 

  • To be able to go. 

  • To have permission to, be allowed. Used in granting permission and in questions to make polite requests. 

  • Expressing a present possibility; possibly. 

  • To gather may, or flowers in general. 

  • Used in modesty, courtesy, or concession, or to soften a question or remark. 

  • To celebrate May Day. 

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