blackberry vs briar

blackberry

noun
  • A fruit-bearing shrub of the aggregate species Rubus fruticosus and some hybrids. 

  • The soft fruit borne by this shrub, formed of a black (when ripe) cluster of drupelets. 

  • The blackcurrant. 

verb
  • To gather or forage for blackberries. 

briar

noun
  • Any of many plants with thorny stems growing in dense clusters, such as many in the Rosa, Rubus, and Smilax genera. 

  • The white heath (Erica arborea), a thorny Mediterranean shrub. 

  • Anything sharp or unpleasant to the feelings. 

  • A pipe for smoking, made from the roots of that shrub. 

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