intermittent vs lasting

intermittent

adj
  • Stopping and starting, occurring, or presenting at intervals; coming after a particular time span. 

  • Existing only for certain seasons; that is, being dry for part of the year. 

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 intermittent and lasting occurred in a corpus of books? (source: Google Ngram Viewer )