emanation vs emission

emanation

noun
  • The act of flowing or proceeding (of something, quality, or feeling) from a source or origin. 

  • That which issues, flows, or proceeds from any object as a source; efflux; an effluence. 

  • The generation of the Son and the procession of the Holy Spirit, as distinct from the origination of created beings. 

emission

noun
  • The act of emitting; the act of sending forth or putting into circulation. 

  • A show; a program. 

  • Something which is emitted or sent out; issue. 

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