ivy vs seedling

ivy

noun
  • Any of several woody, climbing, or trailing evergreen plants of the genus Hedera. 

  • Any similar plant of any genus. 

seedling

noun
  • a tree smaller than a sapling. 

  • one grown in a nursery for transplanting. 

  • A young plant grown from seed. 

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