azygous vs one and only

azygous

adj

  • odd; not one of a pair; single 

one and only

adj

  • Unique, one of a kind. 

noun

  • The most talented or famous person (within in a specific context) 

  • Only love, sole sweetheart. 

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