lethargy vs zing

lethargy

noun
  • A condition characterized by extreme fatigue or drowsiness, deep unresponsiveness, or prolonged sleep patterns. 

  • A state of extreme torpor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness. 

zing

noun
  • A short high-pitched humming sound, such as that made by a bullet or vibrating string. 

  • A witty insult or derogatory remark. 

  • Zest or vitality. 

  • Pleasant or exciting flavour of food. 

intj
  • A high pitched humming sound. 

  • Used to acknowledge a witty comeback, a zinger. 

verb
  • To move very quickly, especially while making a high-pitched hum. 

  • To address a witty insult or comeback to. 

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