sing one's own praises vs swank

sing one's own praises

swank

adj

  • Fashionably elegant, posh. 

verb

  • To swagger, to show off. 

noun

  • A fashionably elegant person. 

  • Ostentation; bravado. 

How often have the words sing one's own praises and swank occurred in a corpus of books? (source: Google Ngram Viewer )