aqua vs olive green

aqua

adj
  • Of a greenish-blue colour. 

noun
  • A shade of colour, usually a mix of blue and green similar to the colour turquoise. 

  • The compound water. 

olive green

adj
  • Having this hue. 

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

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