append vs isolate

append

noun
  • An instance of writing more data to the end of an existing file. 

verb
  • To add, as an accessory to the principal thing; to annex 

  • To write more data to the end of a pre-existing file, string, or other object. 

  • To hang or attach to, as by a string, so that the thing is suspended 

isolate

verb
  • To self-isolate. 

  • To separate a pure strain of bacteria etc. from a mixed culture. 

  • To separate a substance in pure form from a mixture. 

  • To insulate, or make free of external influence. 

  • To insulate an electrical component from a source of electricity. 

  • To set apart or cut off from others. 

  • To place in quarantine or isolation. 

noun
  • Something that has been isolated. 

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