pester vs tomfoolery

pester

noun

  • A bother or nuisance. 

verb

  • To bother, harass, or annoy persistently. 

tomfoolery

noun

  • Foolish behaviour or speech. 

  • Jewellery. 

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