nuclear vs physics package

nuclear

noun
  • Nuclear weapon 

  • Nuclear power. 

adj
  • Involving an extreme course of action. 

  • Pertaining to the nucleus of a cell. 

  • Relating to a weapon that derives its force from rapid release of energy through nuclear reactions. 

  • Involving energy released by nuclear reactions (fission, fusion, radioactive decay). 

  • Pertaining to the nucleus of an atom. 

physics package

noun
  • The part of any equipment which requires advanced knowledge of physics to design; especially the core nuclear components of a nuclear weapon 

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