fuzzy vs well-defined

fuzzy

noun
  • A person, especially a college student, interested in humanities or social sciences, as opposed to one interested in mathematics, science, or engineering. 

  • A very small piece of plush material. 

  • Something covered with fuzz or hair, as an animal or plush toy. 

  • A soldier with the rank of private. 

adj
  • Vague or imprecise. 

  • Covered with fuzz or a large number of tiny loose fibres like a carpet or many stuffed animals 

  • Employing or relating to fuzzy logic. 

  • Not clear; unfocused. 

well-defined

adj
  • Accurately and precisely described or specified 

  • Having a clean and distinct outline 

  • Defined in an unambiguous and consistent way: specifically, such that any two objects implied to be identical are indeed identical. 

How often have the words fuzzy and well-defined occurred in a corpus of books? (source: Google Ngram Viewer )