celandine vs lady's earrings

celandine

noun

  • lesser celandine (Ficaria verna, formerly Ranunculus ficaria) 

  • Either of two not closely related flowering plants 

  • greater celandine (Chelidonium majus) 

lady's earrings

How often have the words celandine and lady's earrings occurred in a corpus of books? (source: Google Ngram Viewer )