secret writing

1. A piece of writing in code or cipher (synset 106366590)
   is a type of: piece of writing, writing, written material - the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect)
   same as: cryptogram, cryptograph
2. Act of writing in code or cipher (synset 100615776)
   is a type of: committal to writing, writing - the activity of putting something in written form
   subtypes:

   • encoding, encryption - the activity of converting data or information into code
   • recoding - converting from one code to another
   • decipherment, decoding, decryption - the activity of making clear or converting from code into plain text
   same as: coding, cryptography, steganography

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