There are several synonyms for the word "steganography," which is the practice of concealing messages or information within other seemingly harmless messages or data. Some of the synonyms for this term include "information hiding," "covert communication," "secret writing," and "hidden message transmission." Other related terms include "encryption," which involves encoding information using a secure algorithm, and "cryptology," which refers to the field of study that encompasses cryptography and steganography. While these terms may have slightly different meanings, they are all focused on the goal of securing and protecting information through various methods of covert communication and message hiding.