meld vs sever

meld

verb
  • to combine multiple similar objects into one. 

  • In card games, especially of the rummy family, to announce or display a combination of cards. 

noun
  • A combination of cards which is melded. 

sever

verb
  • To disconnect; to disunite; to terminate. 

  • To make a separation or distinction; to distinguish. 

  • To cut free. 

  • To suffer disjunction; to be parted or separated. 

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