gumshoe vs overshoe

gumshoe

noun

  • A sneaker or rubber overshoe. 

  • A detective. 

verb

  • To act as a detective. 

overshoe

noun

  • To prevent damage to a floor. 

  • To protect from water or mud. 

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