convenient vs vincinal

convenient

adj
  • Serving to reduce a difficulty, or accessible with minimum difficulty; expedient. 

  • Suspicious due to suiting someone's purposes very well. 

vincinal

adj
  • Of, belonging to, or restricted to a limited area or neighborhood; local. 

  • Relating to or being a local road. 

  • Mineralogy. Approximating, resembling, or taking the place of a fundamental crystalline form or face. 

  • Chemistry. Of or relating to the consecutive positions of substituted elements or radicals on an organic compound. 

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