antibiotic vs sulfa drug

antibiotic

noun
  • Any substance that can destroy or inhibit the growth of bacteria and similar microorganisms, generally transported by the lymphatic system. 

adj
  • Of or relating to antibiotics. 

sulfa drug

noun
  • Any of a group of antibiotic drugs structurally related to sulphonamide, tending to be bacteriostatic rather than bacteriocidal. 

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