chinstrap vs lappet

chinstrap

noun
  • A strip of leather or material used to fasten a hat or helmet under the chin. 

  • A form of beard that follows the jawline but does not cover the rest of the chin. 

  • A band of colour below a bird's mouth, resembling the chinstrap of a helmet. 

lappet

noun
  • A head-dress made with lappets for lace pendants. 

  • A wattle or flap-like structure on the face. 

  • A small decorative fold or flap, especially of lace or muslin, in a garment or headdress. 

verb
  • To decorate with, or as if with, lappets. 

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