business suit vs vestment

business suit

noun
  • A plain, formal matching jacket and trousers (or skirt), as worn by office workers. 

vestment

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

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

  • Clothing. 

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