niggard vs unnoble

niggard

adj
  • Sparing; stinting; parsimonious. 

  • Miserly or stingy. 

verb
  • To hoard; to act stingily. 

noun
  • A false bottom in a grate, used for saving fuel. 

  • A miser or stingy person; a skinflint. 

unnoble

adj
  • Not noble; ignoble; base. 

  • Of a metal, being at the lower end of the electrochemical series, i.e. oxidising readily. 

verb
  • To make (someone or something) no longer noble 

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