lethargic vs swaggering

lethargic

adj

  • indifferent, apathetic 

  • sluggish, slow 

swaggering

adj

  • Boastful, proud, self-confident. 

noun

  • Boastful, blustering behaviour. 

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