reusable vs washable

reusable

adj
  • Able to be used again; especially after salvaging or special treatment or processing 

  • (of a program) Able to be executed by several tasks without being reloaded; either reentrant or serially reusable 

noun
  • Any product, such as a diaper, that is not disposable but can be used more than once. 

washable

adj
  • Capable of being washed without being damaged; especially by a specified method, for example machine-washable. 

noun
  • Something that can be washed without being damaged. 

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