acrid vs antacid

acrid

adj
  • Causing heat and irritation. 

  • Caustic; bitter; bitterly irritating. 

  • Sharp and harsh, or bitter and not to the taste. 

antacid

adj
  • Counteracting or neutralizing acidity, especially in the stomach. 

noun
  • An agent that counteracts or neutralizes acidity, especially in the stomach. 

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