blend vs soldering

blend

noun
  • A mixture of two or more things. 

  • A word formed by combining two other words; a grammatical contamination, portmanteau word. 

verb
  • To be mingled or mixed. 

  • To mingle; to mix; to unite intimately; to pass or shade insensibly into each other. 

soldering

noun
  • A method of joining two metallic surfaces by melting an alloy between them. 

  • A soldered joint. 

  • An instance of soldering. 

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