overalls vs pantaloons

overalls

noun
  • A loose-fitting garment worn over regular clothes to protect them. 

  • Trousers traditionally worn by cavalry. 

  • Loose-fitting pants with supporting cross-straps and a panel of material in the chest (called a bib), often associated with farm work. 

pantaloons

noun
  • An article of clothing covering each leg separately, that covers the area from the waist to the ankle. 

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