beryl vs olive green

beryl

noun
  • A dull blueish green colour. 

  • An example (a stone) of the mineral beryl. 

  • A mineral of pegmatite deposits, often used as a gemstone. 

adj
  • Of a dull bluish green colour. 

olive green

noun
  • A green-yellow hue that is brighter and greener than olive. 

adj
  • Having this hue. 

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