trapping vs vestment

trapping

noun
  • An ornamental covering or harness for a horse; caparison. 

  • An instance of ensnaring something or someone. 

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