pester vs vamper

pester

verb
  • To bother, harass, or annoy persistently. 

noun
  • A bother or nuisance. 

vamper

verb
  • To swagger; to make an ostentatious show. 

noun
  • One who vamps; one who creates or repairs by piecing old things together; a cobbler. 

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