TB vs tuberculosis

TB

noun
  • tuberculosis 

  • throwback 

  • total bases 

symbol
  • terabyte (1,000 gigabytes or 10¹² bytes). 

  • tebibyte (2¹⁰ (1024) mebibytes or 2⁴⁰ (1024⁴) bytes). 

tuberculosis

noun
  • An infectious disease of humans and animals caused by a species of mycobacterium, usually Mycobacterium tuberculosis, mainly infecting the lungs where it causes tubercles characterized by the expectoration of mucus and sputum, fever, weight loss, and chest pain, and transmitted through inhalation or ingestion of bacteria. 

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