Cipher writing refers to the practice of encoding information using various codes and ciphers. Some synonyms for cipher writing include codes, cryptograms, secret writing, and encryption. A cipher is a system of writing in which each letter of plaintext is replaced by another letter or symbol, making the message indecipherable without the use of a key. Cryptograms are puzzles that use ciphers or codes to conceal a message; they are a popular form of entertainment and mental exercise. Finally, encryption is the process of transforming plain text into cipher text, ensuring that data remains secure from unauthorized access. Overall, these synonyms highlight the importance of encryption and cipher writing in securing sensitive information.