affine vs crisp

affine

verb
  • To refine. 

noun
  • A relative by marriage. 

adj
  • Of or pertaining to a function expressible as f(⃑x)=A⃑x+⃑b (where A is a linear transformation and ⃑b is a constant), which, regarded as a transformation, maps parallel lines to parallel lines and finite points to finite points. 

  • Assigning finite values to finite quantities. 

  • Of two materials, having mutual affinity. 

crisp

verb
  • To become crisp. 

  • To make crisp. 

  • To interweave (of the branches of trees). 

noun
  • A very thin slice of potato that has been deep fried, typically packaged and sold as a snack. 

  • A baked dessert made with fruit and crumb topping 

  • Anything baked or fried in thin slices and eaten as a snack. 

adj
  • Sharp, clearly defined. 

  • Brief and to the point. 

  • having a refreshing amount of acidity; having less acidity than green wine, but more than a flabby one. 

  • Brittle; friable; in a condition to break with a short, sharp fracture. 

  • Quick and accurate. 

  • Not using fuzzy logic; based on a binary distinction between true and false. 

  • Dry and cold. 

  • Possessing a certain degree of firmness and freshness. 

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