curd vs percolate

curd

noun
  • The coagulated part of any liquid. 

  • The edible flower head of certain brassicaceous plants. 

  • The part of milk that coagulates when it sours or is treated with enzymes; used to make cottage cheese, dahi, etc. 

verb
  • To form curd; to curdle. 

  • To cause to coagulate or thicken; to cause to congeal; to curdle. 

percolate

noun
  • A liquid that has been percolated. 

verb
  • To pass a liquid through a porous substance; to filter. 

  • To make (coffee) in a percolator. 

  • To drain or seep through a porous substance. 

  • To spread slowly or gradually; to slowly become noticed or realised. 

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