overalls vs vestment

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. 

vestment

noun
  • Clothing. 

  • Any of the special articles of clothing worn by members of the clergy etc., especially a garment worn at the celebration of the Eucharist. 

  • A robe, gown, or other article of clothing worn as an indication of office. 

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