creeping Charlie vs creeping Jenny

creeping Charlie

noun
  • ground ivy, Glechoma hederacea 

  • Swedish ivy (Plectranthus verticillatus), in the mint family, a popular houseplant 

  • creeping Charlie (Pilea nummulariifolia), a houseplant in the nettle family 

  • moneywort 

creeping Jenny

noun
  • Field bindweed (Convolvulus arvensis, Convolvulaceae). 

  • A yellow-flowered crawling plant (Lysimachia nummularia, Myrsinaceae) native to Europe, widely planted, also known as moneywort. 

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