fragile vs lasting

fragile

noun
  • Something that is fragile. 

adj
  • Easily broken or destroyed, and thus often of subtle or intricate structure. 

  • Feeling weak or easily disturbed as a result of illness. 

  • Thin-skinned or oversensitive. 

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