dear heart vs petal

dear heart

noun
  • Term of affection; sweetheart. 

petal

noun
  • Term of endearment. 

  • A lobe of a rose (geometric shape). 

  • One of the component parts of the corolla of a flower. It applies particularly, but not necessarily only, when the corolla consists of separate parts, that is when the petals are not connately fused. Petals are often brightly colored. 

verb
  • To spread out from, like the petals of a flower 

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