molass vs treacle

molass

noun
  • A viscous byproduct of sugar production, raw molasses. 

  • A sweet hard candy made from molasses. 

  • Cheap whiskey made from molasses. 

treacle

noun
  • A syrupy byproduct of sugar refining; molasses or golden syrup. 

  • Sweetheart (from treacle tart). 

  • Cloying sentimental speech. 

verb
  • To apply treacle to a surface, so as to catch flies or moths, etc. 

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