faultfinding vs pester

faultfinding

noun

  • Excessive or petty criticism 

adj

  • Tending to find fault 

pester

noun

  • A bother or nuisance. 

verb

  • To bother, harass, or annoy persistently. 

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