lasting vs skittish

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. 

skittish

adj
  • Wanton; changeable; fickle. 

  • Difficult to manage; tricky. 

  • Easily scared or startled; timid. 

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