central heating vs fusion

central heating

noun
  • Any of various heating systems in which a central source of heat is used to distribute heat (and sometimes hot water) throughout a building in a controlled manner. 

fusion

noun
  • The act of melting or liquefying something by heating it. 

  • The result of the hybridation of two genes which originally coded for separate proteins. 

  • The act of two characters merging into one, typically more powerful, being; or the merged being itself. 

  • The process by which two distinct lipid bilayers merge their hydrophobic core, resulting in one interconnected structure. 

  • A style of music that blends disparate genres; especially different types of jazz and reggae. 

  • A style of cooking that combines ingredients and techniques from different countries or cultures 

  • A nuclear reaction in which nuclei combine to form more massive nuclei with the concomitant release of energy. 

verb
  • to combine; to fuse 

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