Diplomatic codes are systems of words or symbols used by governments to communicate securely with each other. There are various synonyms for this term, including encryption, cryptology, cipher, code, and signal. Encryption and cryptology are the most technical terms, referring to the science of making and breaking codes respectively. Cipher, code, and signal are more general terms, referring to any system used to convey a message secretly or indirectly. Whether it's for military operations, espionage or diplomacy, the use of diplomatic codes is crucial in ensuring the confidentiality and security of sensitive information. As technology advances, the need for more sophisticated codes and encryption techniques continues to grow.