annex vs occupy

annex

verb
  • To attach or connect, as a consequence, condition, etc. 

  • To join; to be united. 

  • To add something to another thing, especially territory; to incorporate. 

noun
  • An appendix to a book or document. 

  • An addition to the territory of a country or state, from a neighbouring country or state, normally by military force. 

  • An addition, an extension. 

  • An addition or extension to a building. 

occupy

verb
  • To possess or use the time or capacity of; to engage the service of. 

  • To fill space. 

  • To fill. 

  • To live or reside in. 

  • To fill or hold (an official position or role). 

  • To hold the attention of. 

  • To have, or to have taken, possession or control of (a territory). 

  • To place the theodolite or total station at (a point). 

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