aqua vs celery

aqua

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

  • The compound water. 

adj
  • Of a greenish-blue colour. 

celery

noun
  • A yellow-green colour, like that of a celery. 

  • A European herb (Apium graveolens) of the carrot family. 

  • The stalks of this herb eaten as a vegetable. 

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