Cryptology

noun the art of writing or solving codes or ciphers

• Cryptography is the science of secure communication in the presence of adversaries.
• I learned about cryptography in my computer science class.
• Cryptography is like secret codes for computers.
• In a world full of secrets, cryptography acts as a shield for sensitive information.

noun a word used to identify a word used to identify any of a class of people, places, or things

adjective a word that describes or gives more information about a noun or pronoun

• The twins communicated with each other in their secret language, using a code only they understood.
• Me and my best friend have our own secret language that we use to gossip about people.
• Me and my squad have a secret language that we use to talk about our crushes without anyone knowing.
• Music can be like a secret language that speaks to our emotions in ways words cannot.