append vs conjoin

append

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 

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

conjoin

verb
  • To join together; to unite; to combine. 

  • To combine two sets, conditions, or expressions by a logical AND; to intersect. 

  • To marry. 

  • To unite, to join, to league. 

  • To join as coordinate elements, often with a coordinating conjunction, such as coordinate clauses. 

noun
  • A reassembled bone, stone or ceramic artifact. 

  • One of the words or phrases that are coordinated by a conjunction. 

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