plait vs pleach

plait

verb
  • To interweave the strands or locks of; to braid 

  • To fold; to double in narrow folds; to pleat 

noun
  • A flat fold; a doubling, as of cloth; a pleat. 

  • A braid, as of hair or straw; a plat. 

pleach

verb
  • To unite by interweaving, as (horticulture) branches of shrubs, trees, etc., to create a hedge; to interlock, to plash. 

noun
  • An act or result of interweaving; specifically, (horticulture) a hedge or lattice created by interweaving the branches of shrubs, trees, etc. 

  • A notch cut into a branch so that it can be bent when pleaching is carried out. 

  • A branch of a shrub, tree, etc., used for pleaching; a pleacher. 

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