acerbic vs depressoid

acerbic

adj

  • Tasting sour or bitter. 

  • Sharp, harsh, biting. 

depressoid

adj

  • Depressing or miserable. 

  • Resembling depression. 

noun

  • A depressed or miserable person. 

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