fickle vs lasting

fickle

verb
  • To puzzle, perplex, nonplus. 

  • To deceive, flatter. 

adj
  • Changeable. 

  • Quick to change one’s opinion or allegiance; insincere; not loyal or reliable. 

lasting

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

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

adj
  • Persisting for an extended period of time. 

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