ephemeral vs lasting

ephemeral

adj
  • Lasting for a short period of time. 

  • Usually dry, but filling with water for brief periods during and after precipitation. 

  • Existing for only one day, as with some flowers, insects, and diseases. 

noun
  • Something which lasts for a short period of time. 

lasting

adj
  • Persisting for an extended period of time. 

noun
  • A durable woollen material formerly used for women's shoes. 

  • The act or process of shaping footwear on a last. 

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