antibacterial vs antimicrobial

antibacterial

adj
  • Killing or inhibiting bacteria. 

noun
  • A drug having the effect of killing or inhibiting bacteria. 

antimicrobial

adj
  • tending to destroy or capable of destroying microbes 

  • inhibiting the growth of microbes 

  • preventing or counteracting the pathogenic action of microbes 

noun
  • an agent that destroys microbes, inhibits their growth, or prevents or counteracts their pathogenic action 

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