bitter orange vs orangeness

bitter orange

noun

  • A citrus tree of the species Citrus ×aurantium, also called Citrus aurantium. 

  • A citrus tree of the species Citrus limetta. 

  • The fruit of these species. 

orangeness

noun

  • The quality of being orange in colour. 

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