keeve vs submerge

keeve

verb
  • To set in a keeve, or tub, for fermentation. 

  • To heave; to tilt, as a cart. 

noun
  • A large vat used in dressing ores. 

  • A vat or tub in which the mash is made; a mash tub. 

  • A bleaching vat; a kier. 

submerge

verb
  • To put into a liquid; to immerse; to plunge into and keep in. 

  • To sink out of sight. 

  • To engulf or overwhelm. 

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