impede vs vamper

impede

verb
  • To get in the way of; to hinder. 

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 impede and vamper occurred in a corpus of books? (source: Google Ngram Viewer )