affine vs snug

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. 

snug

verb
  • To make smooth. 

  • To make secure or snug. 

  • To snuggle or nestle. 

noun
  • A small, comfortable back room in a pub. 

  • A lug. 

adj
  • Warm and comfortable; cosy. 

  • Close; concealed; not exposed to notice. 

  • Satisfactory. 

  • Close-fitting. 

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