envelopment vs inclusion

envelopment

noun
  • The act of enveloping. 

  • An offensive action in which an attacking force moves over or around the enemy and attacks from the rear; see also pincer movement. 

  • That which envelops; a covering. 

  • An action to seize the opponent's blade in one line and lead it (without losing contact) through a full circle to end in the same line. 

inclusion

noun
  • The act of including, i.e. adding or annexing, (something) to a group, set, or total. 

  • A mapping where the domain is a subset of the image. 

  • Anything foreign that is included in a material, 

  • Any material that is trapped inside a mineral during its formation, as a defect in a precious stone. 

  • A nuclear or cytoplasmic aggregate of stainable substances. 

  • An addition or annex to a group, set, or total. 

  • An object completely inside a tissue, such as epidermal inclusion cyst, a cyst in the epidermis. 

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