swimming costume vs vestment

swimming costume

noun
  • the garments that one wears when bathing in the sea or a swimming pool, especially the one-piece garment worn by women and girls. 

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 swimming costume and vestment occurred in a corpus of books? (source: Google Ngram Viewer )